table of Contents
1. Attr() method: use jQuery statement directly
Two, use the anload tag attribute in the body
Three, call function anonymous method to achieve
Four, $(document) method to add elements
Five, addClass(class|fn) method
jQuery element adding method
1. attr() method : use jQuery statement directly
Format: attr() Method: attr(name|properties|key,value|key,fn):
Sets or returns the attribute value of the selected element.
1. name: return the property value of the name property: 
2. properties: use the JavaScript object to set the property value of the property: 
3. key, value: 
4. key, fn:
Code example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="jquery-1.8.3.js" ></script>
</head>
<body>
<a id="bd">百度</a>
<script>
var id = $("#title").attr("id");//获取
console.log(id);
$("#bd").attr("href","http://www.baidu.com");//代码要写在a标签的下面，除非写成方法
</script>
</body>
</html>
Result display:
Click to jump to Baidu page
Two, use the anload tag attribute in the body
Format: <body οnlοad="t()">
Code example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="jquery-1.8.3.js" ></script>
<script>
function t(){
$("#bd").attr("href","http://www.baidu.com");
}
</script>
</head>
<body onload="t()">
<a id="bd">百度</a>
</body>
</html>
Same result as attr method
Three, call function anonymous method to achieve
Code example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="jquery-1.8.3.js" ></script>
<script>
$(function t(){
$("#bd").attr("href","http://www.baidu.com");
});//相当于onload,可以省写onload
$(document).ready(function t(){
$("#bd").attr("href","http://www.baidu.com");
});//上面那个的原始代码
</script>
</head>
<body >
<a id="bd">百度</a>
</body>
</html>
Same result as attr method
Four, $(document) method to add elements
Code example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script type="text/javascript" src="jquery-1.8.3.js" ></script>
<script>
$(document).ready(function t(){
$("#bd").attr("href","http://www.baidu.com");
});//上面那个的原始代码
</script>
</head>
<body >
<a id="bd">百度</a>
</body>
</html>
Same result as attr method
Five, addClass(class|fn) method
Set the attribute value of the class attribute for the matched element. Use spaces to separate multiple attribute values. The following example:
At the same time, removeClass([class|fn]): delete the attribute value of the class attribute of the matching element, multiple attribute values are separated by spaces, as in the following example:
六、toggleClass(class|fn[,sw])
Switch styles-delete the class name if it exists, add it if the class name does not exist.