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jquery gets the value and text of the select tag
- php中世界最好的语言Original
- 2018-03-15 09:31:471972browse
This time I will bring you jquery to get the value and text of the select tag. What are the precautions for jquery to get the value and text of the select tag? The following is a practical case, let's take a look.
1. If you want to use jquery, you must first introduce the jquery file into html or jsp.
# 2. Without further ado, let’s get into the code.
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script type="text/javascript" src="../../../../js/common/jquery-1.6.2.js"></script>
<script type="text/javascript">
function doSome(){
alert($("#sel option:selected").text());//方法一：获取select标签选中的option中的文本。
alert($("#sel").find("option:selected").text());//方法二：获取select标签选中的option中的文本。
alert($("#sel option:selected").val());//方法一：获取select标签选中的option中的value的值。
alert($("#sel").find("option:selected").val());//方法二：获取select标签选中的option中的value的值。
//------------------------------帅气的分割线，，下面有重点--------------------------------
//当option是这样的：<option>cc</option>。即没有value属性的时候。自然也就没有value值。
//这时候jquery就很纠结：写了段代码让我拿value的值，可是找到的option中根本没有value属性。
//算了，把option中 的文本拿出来给你吧。
//所以当选中<option>cc</option>这个option的时候，你会发现上边四个alert出来的值是一样的。都是option中的文本。
//想要拿到option中的value的值，首先option得有value属性啊！！！
}
</script>
</head>
<body>
<p>
<select id="sel" onchange="doSome();">
<option value="aa">bb</option>
<option>cc</option>
</select>
</p>
</body>
</html> I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website! Recommended reading:
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