1. Today I found that in addition to the jquery object, the dom object obtained by jquery can also access the original object. Just add a []. It turns out that there is such a function, but I didn't study it carefully before.
2, use first-child, nth-child(n) to get the first element in the element set.
3. Use Jquery to access the nodeText node by accessing the original object and nextSibling. The access is nextSibling.nodeValue;
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Zephyr's Document</title>
<script src="http://common.cnblogs.com/script/jquery.js"></script>
<style type="text/css" media="screen">
/*<![CDATA[*/
/*]]>*/
</style>
<script type="text/javascript">
$(function(){
var tempBr=$("br");
tempBr.each(function(index,doElem){
doElem.nextSibling.nodeValue=doElem.nextSibling.nodeValue.replace(/\s{6}/g,"");
})})
</script>
</head>
<body>
asdf
<br />
" asdf"
<br />
" asdf"
<br />
" asdf"
</body>
</html>
4.DOM object and jQuery object conversion
The code to obtain the DOM object is as follows:
//获取DOM对象
var div1 = document.getElementById("div1");
div1.innerHTML = "oec2003";
The code to obtain the jQuery object is as follows:
//获取jQuery对象
var div1 = $("#div1");
div1.html("oec2003");
jQuery object to DOM object
//因为ajQuery对象是一个数组对象，所以转换为DOM对象时要用索引的形式
var $div1 = $("#div1"); //jQuery对象
var div1 = $div1[0]; //转换为了DOM对象
var div2 = $div1.get(0); //和上面一行效果一样
div1.innerHTML = "oec2003";
DOM object to jQuery object
//DOM对象转jQuery只需用$包装即可
var div1 = document.getElementById("div1");
var $div1 = $(div1); //转换为了jQuery对象
$div1.html("oec2003");
5. Resolve conflicts
Sometimes there are scenarios where jQuery is used together with other libraries or some public script files written by yourself, and there may be a $ conflict problem. There are two situations to resolve the conflict:
1. The jQuery library is referenced after other libraries, as shown below:
There is a redefinition of $ in common.js, the code is as follows:
function $(id) {
return document.getElementById(id);
}
The following is the code to resolve conflicts in jQuery. There are four ways:
//方式1
jQuery.noConflict(); //将$控制权移交出去，以前使用$的地方都改用jQuery
jQuery(document).ready(function () {
alert(jQuery("#span1").html());
});
window.onload = function () {
$("span1").innerHTML = "oec2003";
}
//方式2
var $j=jQuery.noConflict(); //定义快捷方式
$j(document).ready(function () {
alert($j("#span1").html());
});
window.onload = function () {
$("span1").innerHTML = "oec2003";
}
//方式3
jQuery.noConflict(); //在函数内部继续使用$
jQuery(function ($) {
alert($("#span1").html());
});
window.onload = function () {
$("span1").innerHTML = "oec2003";
}
//方式4
jQuery.noConflict(); //在函数内部继续使用$另一种方式
(function ($) {
$(function(){
alert($("#span1").html());
});
})(jQuery);
window.onload = function () {
$("span1").innerHTML = "oec2003";
}
2. Use jQuery library before other libraries
//如果先引用jQuery脚本，可以不使用noConflict
//jQuery.noConflict();
jQuery(document).ready(function () {
alert(jQuery("#span1").html());
});
window.onload = function () {
$("span1").innerHTML = "oec2003";
}
The above is all the content shared with you in this article. I hope you will like it.
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