javascript implementation code for proportional scaling of images in a specified area Script House Integrated Version [Original]_Image Special Effects

Script House integration article, welcome to reprint.

Copy code The code is as follows:

function controlImg(ele,w,h){
var c=ele.getElementsByTagName("img");
for(var i=0;ivar w0=c[i].clientWidth,h0=c[i ].clientHeight;
var t1=w0/w,t2=h0/h;
if(t1>1||t2>1){
c[i].width=Math.floor(w0 /(t1>t2?t1:t2));
c[i].height=Math.floor(h0/(t1>t2?t1:t2));
if(document.all){
c[i].outerHTML='' c[i].outerHTML '< ;/a>'
}
else{
c[i].title="Open image in new window";
c[i].onclick=function(e){window.open (this.src)}
}
}
}
}
window.onload=function(){
controlImg(document.getElementById("content"),670,980);
}

This kind of code was needed before, but because the specific idea was not very clear, I have compiled the article I saw in blueidea today.
Images in the specified area are generally used to control the content part. The content in controlImg(document.getElementById("content"),670,980); is used. The following is the test code.

<img src="http://www.jb51.net/images/logo.gif" alt="javascript implementation code for proportional scaling of images in a specified area Script House Integrated Version [Original]_Image Special Effects" > <div id="dxy"> Below are the areas to control. <center> Original image <img alt="photoshop 图片调色教程 苍白皮肤的冷酷美女" style="max-width:90%" style="max-width:90%" src="http://files.jb51.net/file_images/photoshop/200910/200910241416206868.jpg"> </center> <center> Tutorial layer: 1. Open the original image and make a copy 2. Execute Layer <New Adjustment Layer<Hue/Saturation Parameters are not explained. 3. Execute Layer <New Adjustment Layer<Curve 4. Remove the color and then lower the opacity 5. Execute layer <New adjustment layer<Brightness/Contrast <img alt='photoshop 图片调色教程 苍白皮肤的冷酷美女' style="max-width:90%" style="max-width:90%" src="http://files.jb51.net/file_images/photoshop/200910/200910241416206969.jpg" /></center></div> <center> Here are the areas that do not need to be controlled, you can refer to them. Original image <img alt='photoshop 图片调色教程 苍白皮肤的冷酷美女' style="max-width:90%" style="max-width:90%" src="http://files.jb51.net/file_images/photoshop/200910/200910241416206868.jpg" /></center><center> Tutorial layer: 1. Open the original image and make a copy 2. Execute Layer <New Adjustment Layer<Hue/Saturation Parameters are not explained. 3. Execute Layer <New Adjustment Layer<Curve 4. Remove the color and then lower the opacity 5. Execute layer <New adjustment layer<Brightness/Contrast <img alt='photoshop 图片调色教程 苍白皮肤的冷酷美女' style="max-width:90%" style="max-width:90%" src="http://files.jb51.net/file_images/photoshop/200910/200910241416206969.jpg" /></center></body>
[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute

]


The following is used The method of implementing css expression will increase the load on the client. It is recommended to use js's
. Suppose there is a div with an id of test. How to control whether the pictures inside it will be stretched?
Just define the CSS as follows:

Copy the code

The code is as follows:

　#test IMG {
border:0;
margin:0;
padding:0;
max-width:600px;
width:expression(this.width>600?"600px":this. width);
max-height:450px;
height:expression(this.height>450?"450px":this.height);
　}

<script> //============================== function controlImg(ele,w,h){ var c=ele.getElementsByTagName("img"); for(var i=0;i<c.length;i++){ var w0=c[i].clientWidth,h0=c[i].clientHeight; var t1=w0/w,t2=h0/h; if(t1>1||t2>1){ c[i].width=Math.floor(w0/(t1>t2?t1:t2)); c[i].height=Math.floor(h0/(t1>t2?t1:t2)); if(document.all){ c[i].outerHTML='<a href="'+c[i].src+'" target="_blank" title="在新窗口打开图片">'+c[i].outerHTML+'' } else{ c[i].title="在新窗口打开图片"; c[i].onclick=function(e){window.open(this.src)} } } } } window.onload=function(){ controlImg(document.getElementById("dxy"),300,300); } </script> , the width of the picture will not exceed 600, the height will not exceed 450, and will be reduced according to the original proportion!