/******************************************************************************
Name: Highslide JS
Version: 3.1.0 (March 1 2007)
Author: Torstein H鴑si
Support: http://vikjavev.no/highslide/forum
Email: See http://vikjavev.no/megsjol
Licence:
Highslide JS is licensed under a Creative Commons Attribution-NonCommercial 2.5
License (http://creativecommons.org/licenses/by-nc/2.5/).
You are free:
* to copy, distribute, display, and perform the work
* to make derivative works
Under the following conditions:
* Attribution. You must attribute the work in the manner specified by the
author or licensor.
* Noncommercial. You may not use this work for commercial purposes.
* For any reuse or distribution, you must make clear to others the license
terms of this work.
* Any of these conditions can be waived if you get permission from the
copyright holder.
Your fair use and other rights are in no way affected by the above.
******************************************************************************/
var hs = {
// Apply your own settings here, or override them in the html file.
graphicsDir : 'highslide/graphics/',
restoreCursor : "zoomout.cur", // necessary for preload
fullExpandIcon : 'fullexpand.gif',
expandSteps : 10, // number of steps in zoom. Each step lasts for duration/step milliseconds.
expandDuration : 250, // milliseconds
restoreSteps : 10,
restoreDuration : 250,
allowMultipleInstances: true,
hideThumbOnExpand : true,
captionSlideSpeed : 1, // set to 0 to disable slide in effect
outlineWhileAnimating : 0, // not recommended, animation gets jaggy on slow systems.
outlineStartOffset : 3, // ends at 10
marginLeft : 10,
marginRight : 35, // leave room for scrollbars outline
marginTop : 10,
marginBottom : 35, // leave room for scrollbars outline
zIndexCounter : 1001, // adjust to other absolutely positioned elements
fullExpandTitle : '放大到实际尺寸',
restoreTitle : '单击可关闭图片, 本窗口可拖动。使用←→键察看上一图或下一图片。',
focusTitle : '切换到这幅图片',
loadingText : 'loading...',
loadingTitle : '点击关闭',
loadingOpacity : 0.75,
showCredits : false, // you can set this to false if you want
creditsText : 'Powered by Highslide JS',
creditsHref : 'http://vikjavev.no/highslide/?user=1',
creditsTitle : 'Go to the Highslide JS homepage',
// These settings can also be overridden inline for each image
anchor : 'auto', // where the image expands from
align : 'auto', // position in the client (overrides anchor)
captionId : null,
captionTemplateId : null,
slideshowGroup : null, // defines groups for next/previous links and keystrokes
spaceForCaption : 30, // leaves space below images with captions
minWidth: 200,
minHeight: 200,
allowSizeReduction: true, // allow the image to reduce to fit client size. If false, this overrides minWidth and minHeight
outlineType : 'drop-shadow', // set null to disable outlines
wrapperClassName : null, // for enhanced css-control
enableKeyListener : true,
// END OF YOUR SETTINGS
// declare internal properties
preloadTheseImages : new Array(),
continuePreloading: true,
expandedImagesCounter : 0,
expanders : new Array(),
overrides : new Array(
'anchor',
'align',
'outlineType',
'outlineWhileAnimating',
'spaceForCaption',
'wrapperClassName',
'minWidth',
'minHeight',
'captionId',
'captionTemplateId',
'allowSizeReduction',
'slideshowGroup',
'enableKeyListener'
),
overlays : new Array(),
toggleImagesGroup : null,
pendingOutlines : new Array(),
// drag functionality
ie : (document.all && !window.opera),
safari : navigator.userAgent.indexOf("Safari") != -1,
hasFocused : false,
$ : function (id) {
return document.getElementById(id);
},
push : function (arr, val) {
arr[arr.length] = val;
},
createElement : function (tag, attribs, styles, parent) {
var el = document.createElement(tag);
if (attribs) hs.setAttribs(el, attribs);
if (styles) hs.setStyles(el, styles);
if (parent) parent.appendChild(el);
return el;
},
setAttribs : function (el, attribs) {
for (var x in attribs) {
el[x] = attribs[x];
}
},
setStyles : function (el, styles) {
for (var x in styles) {
try { el.style[x] = styles[x]; }
catch (e) {}
}
},
ieVersion : function () {
arr = navigator.appVersion.split("MSIE");
return parseFloat(arr[1]);
},
clientInfo : function () {
var iebody = (document.compatMode && document.compatMode != "BackCompat")
? document.documentElement : document.body;
this.width = hs.ie ? iebody.clientWidth : self.innerWidth;
this.height = hs.ie ? iebody.clientHeight : self.innerHeight;
this.scrollLeft = hs.ie ? iebody.scrollLeft : pageXOffset;
this.scrollTop = hs.ie ? iebody.scrollTop : pageYOffset;
} ,
position : function(el) {
var parent = el;
var p = Array();
p.x = parent.offsetLeft;
p.y = parent.offsetTop;
while (parent.offsetParent) {
parent = parent.offsetParent;
p.x = parent.offsetLeft;
p.y = parent.offsetTop;
}
return p;
},
expand : function(a, params, contentType) {
try {
new HsExpander(a, params, contentType);
return false;
} catch (e) {
return true;
}
},
focusTopmost : function() {
var topZ = 0;
var topmostKey = -1;
for (i = 0; i if (hs.expanders[i]) {
if (hs.expanders[i].wrapper.style.zIndex && hs.expanders[i].wrapper.style.zIndex > topZ) {
topZ = hs.expanders[i].wrapper.style.zIndex;
topmostKey = i;
}
}
}
if (topmostKey == -1) hs.focusKey = -1;
else hs.expanders[topmostKey].focus();
},
closeId : function(elId) { // for text links
for (i = 0; i if (hs.expanders[i] && (hs.expanders[i].thumb.id == elId || hs.expanders[i].a.id == elId)) {
hs.expanders[i].doClose();
return;
}
}
},
close : function(el) {
var key = hs.getWrapperKey(el);
if (hs.expanders[key]) hs.expanders[key].doClose();
return false;
},
toggleImages : function(closeId, expandEl) {
if (closeId) hs.closeId(closeId);
if (hs.ie) expandEl.href = expandEl.href.replace('about:(blank)?', ''); // mysterious IE thing
hs.toggleImagesExpandEl = expandEl;
return false;
},
getAdjacentAnchor : function(key, op) {
var aAr = document.getElementsByTagName('A');
var hsAr = new Array;
var activeI = -1;
var j = 0;
for (i = 0; i if (hs.isHsAnchor(aAr[i]) && ((hs.expanders[key].slideshowGroup == hs.getParam(aAr[i], 'slideshowGroup')))) {
hsAr[j] = aAr[i];
if (hs.expanders[key] && aAr[i] == hs.expanders[key].a) {
activeI = j;
}
j ;
}
}
return hsAr[activeI op];
},
getParam : function (a, param) {
try {
var s = a.onclick.toString();
var oneLine = s.replace(/s/g, ' ');
var sParams = oneLine.replace(/.*?hs.(htmlE|e)xpands*?(s*?thiss*?,s*?{(.*?)}.*?$/, '$2');
if (hs.safari) { // stupid bug
for (var i = 0; i sParams = sParams.replace(hs.overrides[i] ':', ',' hs.overrides[i] ':').replace(/^s*?,/, '');
}
}
if (oneLine == sParams) return null;
eval('var arr = {' sParams '};');
for (var x in arr) {
if (x == param) return arr[x];
}
} catch (e) {
return null;
}
},
getSrc : function (a) {
var src = hs.getParam(a, 'src');
if (src) return src;
return a.rel.replace(/_slash_/g, '/') || a.href;
},
previousOrNext : function (el, op) {
if (typeof el == 'object') var activeKey = hs.getWrapperKey(el);
else if (typeof el == 'number') var activeKey = el;
if (hs.expanders[activeKey]) {
hs.toggleImagesExpandEl = hs.getAdjacentAnchor(activeKey, op);
hs.expanders[activeKey].doClose();
}
return false;
},
previous : function (el) {
return hs.previousOrNext(el, -1);
},
next : function (el) {
return hs.previousOrNext(el, 1);
},
keyHandler : function(e) {
if (!e) e = window.event;
if (!e.target) e.target = e.srcElement; // ie
if (e.target.form) return; // form element has focus
var op = null;
switch (e.keyCode) {
case 34: // Page Down
case 39: // Arrow right
case 40: // Arrow left
op = 1;
break;
case 33: // Page Up
case 37: // Arrow left
case 38: // Arrow down
op = -1;
break;
case 27: // Escape
case 13: // Enter
if (hs.expanders[hs.focusKey]) hs.expanders[hs.focusKey].doClose();
return false;
}
if (op != null) {
hs.removeEventListener(document, 'keydown', hs.keyHandler);
if (hs.expanders[hs.focusKey] && !hs.expanders[hs.focusKey].enableKeyListener) return true;
return hs.previousOrNext(hs.focusKey, op);
}
else return true;
},
registerOverlay : function (overlay) {
hs.push(hs.overlays, overlay);
},
getWrapperKey : function (el) {
var key = -1;
while (el.parentNode) {
el = el.parentNode;
if (el.id && el.id.match(/^highslide-wrapper-[0-9] $/)) {
key = el.id.replace(/^highslide-wrapper-([0-9] )$/, "$1");
break;
}
}
return key;
},
cleanUp : function () {
if (hs.toggleImagesExpandEl) {
hs.toggleImagesExpandEl.onclick();
hs.toggleImagesExpandEl = null;
} else {
for (i = 0; i if (hs.expanders[i] && hs.expanders[i].isExpanded) hs.focusTopmost();
}
}
},
mouseClickHandler : function(e)
{
if (!e) e = window.event;
if (e.button > 1) return true;
if (!e.target) e.target = e.srcElement;
var fobj = e.target;
while (fobj.parentNode
&& !(fobj.className && fobj.className.match(/highslide-(image|move|html)/)))
{
fobj = fobj.parentNode;
}
if (!fobj.parentNode) return;
hs.dragKey = hs.getWrapperKey(fobj);
if (fobj.className.match(/highslide-(image|move)/)) {
var isDraggable = true;
var wLeft = parseInt(hs.expanders[hs.dragKey].wrapper.style.left);
var wTop = parseInt(hs.expanders[hs.dragKey].wrapper.style.top);
}
if (e.type == 'mousedown') {
if (isDraggable) // drag or focus
{
hs.dragObj = hs.expanders[hs.dragKey].content;
if (fobj.className.match('highslide-image')) hs.dragObj.style.cursor = 'move';
hs.leftBeforeDrag = wLeft;
hs.topBeforeDrag = wTop;
hs.dragX = e.clientX;
hs.dragY = e.clientY;
hs.addEventListener(document, 'mousemove', hs.mouseMoveHandler);
if (e.preventDefault) e.preventDefault(); // FF
if (hs.dragObj.className.match(/highslide-(image|html)-blur/)) {
hs.expanders[hs.dragKey].focus();
hs.hasFocused = true;
}
return false;
}
else if (fobj.className.match(/highslide-html/)) { // just focus
hs.expanders[hs.dragKey].focus();
hs.expanders[hs.dragKey].redoShowHide();
hs.hasFocused = false; // why??
}
} else if (e.type == 'mouseup') {
hs.removeEventListener(document, 'mousemove', hs.mouseMoveHandler);
if (isDraggable && hs.expanders[hs.dragKey]) {
if (fobj.className.match('highslide-image')) {
fobj.style.cursor = hs.styleRestoreCursor;
}
var hasMoved = wLeft != hs.leftBeforeDrag || wTop != hs.topBeforeDrag;
if (!hasMoved && !hs.hasFocused && !fobj.className.match(/highslide-move/)) {
hs.expanders[hs.dragKey].doClose();
} else if (hasMoved || (!hasMoved && hs.hasHtmlExpanders)) {
hs.expanders[hs.dragKey].redoShowHide();
}
hs.hasFocused = false;
} else if (fobj.className.match('highslide-image-blur')) {
fobj.style.cursor = hs.styleRestoreCursor;
}
}
},
mouseMoveHandler : function(e)
{
if (!hs.expanders[hs.dragKey] || !hs.expanders[hs.dragKey].wrapper) return;
if (!e) e = window.event;
var exp = hs.expanders[hs.dragKey];
var w = exp.wrapper;
w.style.left = hs.leftBeforeDrag e.clientX - hs.dragX 'px';
w.style.top = hs.topBeforeDrag e.clientY - hs.dragY 'px';
if (exp.objOutline) {
var o = exp.objOutline;
o.outer.style.left = (parseInt(w.style.left) - o.offset) 'px';
o.outer.style.top = (parseInt(w.style.top) - o.offset) 'px';
}
return false;
},
addEventListener : function (el, event, func) {
if (document.addEventListener) el.addEventListener(event, func, false);
else if (document.attachEvent) el.attachEvent('on' event, func);
else el[event] = func;
},
removeEventListener : function (el, event, func) {
if (document.removeEventListener) el.removeEventListener(event, func, false);
else if (document.detachEvent) el.detachEvent('on' event, func);
else el[event] = null;
},
isHsAnchor : function (a) {
return (a.className && (a.className.match("highslide$") || a.className.match("highslide ")));
},
preloadFullImage : function (i) {
if (hs.continuePreloading && hs.preloadTheseImages[i] && hs.preloadTheseImages[i] != 'undefined') {
var img = document.createElement('img');
img.onload = function() { hs.preloadFullImage(i 1); };
img.src = hs.preloadTheseImages[i];
}
},
preloadImages : function (number) {
if (number) this.numberOfImagesToPreload = number;
var j = 0;
var aTags = document.getElementsByTagName('A');
for (i = 0; i a = aTags[i];
if (hs.isHsAnchor(a)) {
if (j hs.preloadTheseImages[j] = hs.getSrc(a);
j ;
}
}
}
// preload outlines
new HsOutline(hs.outlineType, function () { hs.preloadFullImage(0)} );
// preload cursor
var cur = document.createElement('img');
cur.src = hs.graphicsDir hs.restoreCursor;
},
genContainer : function () {
if (!hs.container) {
hs.container = hs.createElement('div',
null,
{ position: 'absolute', left: 0, top: 0, width: '100%', zIndex: hs.zIndexCounter },
document.body
);
}
}
}; // end hs object
//-----------------------------------------------------------------------------
HsOutline = function (outlineType, onLoad) {
if (!outlineType) return;
if (onLoad) this.onLoad = onLoad;
this.outlineType = outlineType;
this.outline = new Array();
var v = hs.ieVersion();
hs.genContainer();
this.hasAlphaImageLoader = hs.ie && v >= 5.5 && v this.hasPngSupport = !hs.ie || (hs.ie && v >= 8);
this.hasOutline = this.outlineType && (this.hasAlphaImageLoader || this.hasPngSupport);
this.outer = hs.createElement(
'table',
{
cellSpacing: 0 // saf
},
{
visibility: 'hidden',
position: 'absolute',
zIndex: hs.zIndexCounter ,
borderCollapse: 'collapse'
},
hs.container
);
this.tbody = hs.createElement('tbody', null, null, this.outer);
this.preloadOutlineElement(1); // recursive
};
HsOutline.prototype.preloadOutlineElement = function (i) {
if (this.outline[i] && this.outline[i].onload) { // Gecko multiple onloads bug
this.outline[i].onload = null;
return;
}
this.offset = this.hasOutline ? 10 : 0;
if (i == 1 || i == 4 || i == 6) this.tr = hs.createElement('tr', null, null, this.tbody);
if (i == 5) this.inner = hs.createElement('td', null, { padding: 0, margin: 0, border: 0, position: 'relative' }, this.tr);
var files = Array (0,8,1,2,7,3,6,5,4);
var src = hs.graphicsDir "outlines/" this.outlineType "/" files[i] ".png";
if (this.hasAlphaImageLoader) {
var bgKey = 'filter';
var bgValue = "progid:DXImageTransform.Microsoft.AlphaImageLoader("
"enabled=true, sizingMethod=scale src='" src "') ";
} else if (this.hasPngSupport || this.hasIe7Bug) {
var bgKey = 'background';
var bgValue = 'url(' src ')';
}
var styles = { lineHeight: 0, fontSize: 0, padding: 0, margin: 0, border: 0 };
if (this.hasOutline) styles[bgKey] = bgValue;
var td = hs.createElement('td', null, styles);
var img = hs.createElement('img', null, { visibility: 'hidden', display: 'block' }, td); // for onload trigger
var dim = 2 * this.offset;
hs.setStyles (td, { height: dim 'px', width: dim 'px'} );
var pThis = this;
if (i else img.onload = function() {
hs.pendingOutlines[pThis.outlineType] = pThis;
if (pThis.onLoad) pThis.onLoad();
};
this.tr.appendChild(td);
if (this.hasOutline) img.src = src;
else img.onload();
};
HsOutline.prototype.destroy = function() {
this.outer.parentNode.removeChild(this.outer);
};
//-----------------------------------------------------------------------------
// The expander object
HsExpander = function(a, params, contentType) {
hs.continuePreloading = false;
// override inline parameters
for (i = 0; i var name = hs.overrides[i];
if (params && typeof params[name] != 'undefined') this[name] = params[name];
else this[name] = hs[name];
}
if (params && params.thumbnailId) {
var el = hs.$(params.thumbnailId);
} else { // first img within anchor
for (i = 0; i if (a.childNodes[i].tagName && a.childNodes[i].tagName == 'IMG') {
var el = a.childNodes[i];
break;
}
}
}
if (!el) el = a;
// cancel other
for (i = 0; i if (hs.expanders[i] && hs.expanders[i].thumb != el && !hs.expanders[i].onLoadStarted) {
hs.expanders[i].cancelLoading();
}
}
// check if already open
for (i = 0; i if (hs.expanders[i] && hs.expanders[i].thumb == el) {
hs.expanders[i].focus();
return false;
}
else if (hs.expanders[i] && !hs.allowMultipleInstances) {
hs.expanders[i].doClose();
}
}
this.key = hs.expandedImagesCounter ;
hs.expanders[this.key] = this;
if (contentType == 'html') {
this.isHtml = true;
this.contentType = 'html';
} else {
this.isImage = true;
this.contentType = 'image';
}
this.a = a;
this.thumbsUserSetId = el.id || a.id;
this.thumb = el;
this.overlays = new Array();
var pos = hs.position(el);
// instanciate the wrapper
this.wrapper = hs.createElement(
'div',
{
id: 'highslide-wrapper-' this.key,
className: this.wrapperClassName
},
{
visibility: 'hidden',
position: 'absolute',
zIndex: hs.zIndexCounter
}
);
// store properties of thumbnail
this.thumbWidth = el.width ? el.width : el.offsetWidth;
this.thumbHeight = el.height ? el.height : el.offsetHeight;
this.thumbLeft = pos.x;
this.thumbTop = pos.y;
this.thumbClass = el.className;
// thumb borders
this.thumbOffsetBorderW = (this.thumb.offsetWidth - this.thumbWidth) / 2;
this.thumbOffsetBorderH = (this.thumb.offsetHeight - this.thumbHeight) / 2;
// get the wrapper
if (hs.pendingOutlines[this.outlineType]) {
this.connectOutline();
this[this.contentType 'Create']();
} else if (!this.outlineType) {
hs.genContainer();
this[this.contentType 'Create']();
} else {
this.displayLoading();
var pThis = this;
new HsOutline(this.outlineType,
function () {
pThis.connectOutline();
pThis[pThis.contentType 'Create']();
}
);
}
};
HsExpander.prototype.connectOutline = function(x, y) {
var w = hs.pendingOutlines[this.outlineType];
this.objOutline = w;
hs.pendingOutlines[this.outlineType] = null;
};
HsExpander.prototype.displayLoading = function() {
if (this.onLoadStarted || this.loading) return;
this.originalCursor = this.a.style.cursor;
this.a.style.cursor = 'wait';
if (!hs.loading) {
hs.loading = hs.createElement('a',
{
className: 'highslide-loading',
title: hs.loadingTitle,
innerHTML: hs.loadingText
},
{
position: 'absolute'
}, hs.container
);
if (hs.ie) hs.loading.style.filter = 'alpha(opacity=' (100*hs.loadingOpacity) ')';
else hs.loading.style.opacity = hs.loadingOpacity;
}
this.loading = hs.loading;
this.loading.href = 'javascript:hs.expanders[' this.key '].cancelLoading()';
this.loading.visibility = 'visible';
this.loading.style.left = (this.thumbLeft this.thumbOffsetBorderW
(this.thumbWidth - this.loading.offsetWidth) / 2) 'px';
this.loading.style.top = (this.thumbTop
(this.thumbHeight - this.loading.offsetHeight) / 2) 'px';
setTimeout(
"if (hs.expanders[" this.key "] && hs.expanders[" this.key "].loading) "
"hs.expanders[" this.key "].loading.style.visibility = 'visible';",
100
);
};
HsExpander.prototype.imageCreate = function() {
var img = document.createElement('img');
var key = this.key;
var img = document.createElement('img');
this.content = img;
img.onload = function () { if (hs.expanders[key]) hs.expanders[key].onLoad(); };
img.className = 'highslide-image ' this.thumbClass;
img.style.visibility = 'hidden'; // prevent flickering in IE
img.style.display = 'block';
img.style.position = 'absolute';
img.style.zIndex = 3;
img.title = hs.restoreTitle;
img.onmouseover = function () {
if (hs.expanders[key]) hs.expanders[key].onMouseOver();
};
img.onmouseout = function (e) {
var rel = e ? e.relatedTarget : event.toElement;
if (hs.expanders[key]) hs.expanders[key].onMouseOut(rel);
};
if (hs.safari) hs.container.appendChild(img);
img.src = hs.getSrc(this.a);
this.displayLoading();
};
HsExpander.prototype.onLoad = function() {
try {
if (!this.content) return;
if (this.onLoadStarted) return; // old Gecko loop
else this.onLoadStarted = true;
if (this.loading) {
this.loading.style.visibility = 'hidden';
this.loading = null;
this.a.style.cursor = this.originalCursor || '';
}
if (this.isImage) {
this.newWidth = this.content.width;
this.newHeight = this.content.height;
this.fullExpandWidth = this.newWidth;
this.fullExpandHeight = this.newHeight;
this.content.width = this.thumbWidth;
this.content.height = this.thumbHeight;
}
// identify caption div
var modMarginBottom = hs.marginBottom;
if (!this.captionId && this.thumbsUserSetId) this.captionId = 'caption-for-' this.thumbsUserSetId;
if (this.captionId && (hs.$(this.captionId) || hs.$(this.captionId '-taken'))) {
this.origCaption = hs.$(this.captionId '-taken') ? hs.$(this.captionId '-taken') : hs.$(this.captionId);
this.caption = this.origCaption.cloneNode(1);
modMarginBottom = this.spaceForCaption;
if (!hs.$(this.captionId '-taken')) this.origCaption.id = this.captionId '-taken';
if (!hs.$(this.captionId)) this.caption.id = this.captionId;
else this.caption.id = null;
if (this.captionTemplateId && hs.$(this.captionTemplateId)) {
this.origCapTpl = hs.$(this.captionTemplateId);
this.capTpl = this.origCapTpl.cloneNode(1);
this.capTpl.innerHTML
= this.capTpl.innerHTML.replace(/s/g, ' ').replace('{caption}', this.caption.innerHTML);
this.caption = this.capTpl;
}
}
this.wrapper.appendChild(this.content);
this.content.style.position = 'relative'; // Saf
if (this.caption) this.wrapper.appendChild(this.caption);
this.wrapper.style.left = this.thumbLeft 'px';
this.wrapper.style.top = this.thumbTop 'px';
hs.container.appendChild(this.wrapper);
// correct for borders
this.offsetBorderW = (this.content.offsetWidth - this.thumbWidth) / 2;
this.offsetBorderH = (this.content.offsetHeight - this.thumbHeight) / 2;
var modMarginRight = hs.marginRight 2 * this.offsetBorderW;
modMarginBottom = 2 * this.offsetBorderH;
var ratio = this.newWidth / this.newHeight;
var minWidth = this.allowSizeReduction ? this.minWidth : this.newWidth;
var minHeight = this.allowSizeReduction ? this.minHeight : this.newHeight;
var justify = { x: 'auto', y: 'auto' };
if (this.align == 'center') {
justify.x = 'center';
justify.y = 'center';
} else {
if (this.anchor.match(/^top/)) justify.y = null;
if (this.anchor.match(/right$/)) justify.x = 'max';
if (this.anchor.match(/^bottom/)) justify.y = 'max';
if (this.anchor.match(/left$/)) justify.x = null;
}
client = new hs.clientInfo();
// justify
this.x = {
min: parseInt(this.thumbLeft) - this.offsetBorderW this.thumbOffsetBorderW,
span: this.newWidth,
minSpan: this.newWidth justify: justify.x,
marginMin: hs.marginLeft,
marginMax: modMarginRight,
scroll: client.scrollLeft,
clientSpan: client.width,
thumbSpan: this.thumbWidth
};
var oldRight = this.x.min parseInt(this.thumbWidth);
this.x = this.justify(this.x);
this.y = {
min: parseInt(this.thumbTop) - this.offsetBorderH this.thumbOffsetBorderH,
span: this.newHeight,
minSpan: this.newHeight justify: justify.y,
marginMin: hs.marginTop,
marginMax: modMarginBottom,
scroll: client.scrollTop,
clientSpan: client.height,
thumbSpan: this.thumbHeight
};
var oldBottom = this.y.min parseInt(this.thumbHeight);
this.y = this.justify(this.y);
if (this.isHtml) this.htmlSizeOperations();
if (this.isImage) this.correctRatio(ratio);
var x = this.x;
var y = this.y;
// Selectbox bug
var imgPos = {x: x.min - 20, y: y.min - 20, w: x.span 40, h: y.span 40 this.spaceForCaption};
hs.hideSelects = (hs.ie && hs.ieVersion() if (hs.hideSelects) this.showHideElements('SELECT', 'hidden', imgPos);
// Iframes bug
hs.hideIframes = (window.opera || navigator.vendor == 'KDE' || (hs.ie && hs.ieVersion() if (hs.hideIframes) this.showHideElements('IFRAME', 'hidden', imgPos);
// Make outline ready
if (this.objOutline && !this.outlineWhileAnimating) this.positionOutline(x.min, y.min, x.span, y.span);
var o2 = this.objOutline ? this.objOutline.offset : 0;
// Apply size change
this.changeSize(
1,
this.thumbLeft this.thumbOffsetBorderW - this.offsetBorderW,
this.thumbTop this.thumbOffsetBorderH - this.offsetBorderH,
this.thumbWidth,
this.thumbHeight,
x.min,
y.min,

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

Understanding how JavaScript engine works internally is important to developers because it helps write more efficient code and understand performance bottlenecks and optimization strategies. 1) The engine's workflow includes three stages: parsing, compiling and execution; 2) During the execution process, the engine will perform dynamic optimization, such as inline cache and hidden classes; 3) Best practices include avoiding global variables, optimizing loops, using const and lets, and avoiding excessive use of closures.

Python is more suitable for beginners, with a smooth learning curve and concise syntax; JavaScript is suitable for front-end development, with a steep learning curve and flexible syntax. 1. Python syntax is intuitive and suitable for data science and back-end development. 2. JavaScript is flexible and widely used in front-end and server-side programming.

Python and JavaScript have their own advantages and disadvantages in terms of community, libraries and resources. 1) The Python community is friendly and suitable for beginners, but the front-end development resources are not as rich as JavaScript. 2) Python is powerful in data science and machine learning libraries, while JavaScript is better in front-end development libraries and frameworks. 3) Both have rich learning resources, but Python is suitable for starting with official documents, while JavaScript is better with MDNWebDocs. The choice should be based on project needs and personal interests.

The shift from C/C to JavaScript requires adapting to dynamic typing, garbage collection and asynchronous programming. 1) C/C is a statically typed language that requires manual memory management, while JavaScript is dynamically typed and garbage collection is automatically processed. 2) C/C needs to be compiled into machine code, while JavaScript is an interpreted language. 3) JavaScript introduces concepts such as closures, prototype chains and Promise, which enhances flexibility and asynchronous programming capabilities.

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing


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