Three ways to uncheck the radio button_jquery-JS Tutorial-php.cn

Three ways to uncheck the radio button_jquery

WBOY

Release： 2016-05-16 16:36:45

Original

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This article provides three ways to uncheck radio. The code examples are as follows:

This article relies on jQuery. The first and second methods are implemented using jQuery, and the third method is based on JS and DOM.

<!DOCTYPE HTML> 
<html> 
<head> 
<title>单选按钮取消选中的三种方式</title> 
<script type="text/javascript" src="http://lib.sinaapp.com/js/jquery/1.7.2/jquery.min.js"> 
</script> 
<script type="text/javascript"> 
$(function(){ 
// 
var $browsers = $("input[name=browser]"); 
var $cancel = $("#cancel"); 
var $byhide = $("#byhide"); 
var $remove = $("#remove"); 
// 
$cancel.click(function(e){ 
// 移除属性,两种方式都可 
//$browsers.removeAttr("checked"); 
$browsers.attr("checked",false); 
}); 
// 
$byhide.click(function(e){ 
// 切换到一个隐藏域,两种方式均可 
//$("#hidebrowser").attr("checked",true); 
$("#hidebrowser").attr("checked","checked"); 
}); 
// 
$remove.click(function(e){ 
// 直接去的DOM元素,移除属性 
// 如果不使用jQuery,则可以移植此方式 
var checkedbrowser=document.getElementsByName("browser"); 
/* 
$.each(checkedbrowser, function(i,v){ 
v.checked = false; 
v.removeAttribute("checked"); 
}); 
*/ 
// 
var len = checkedbrowser.length; 
var i = 0; 
for(; i < len; i++){ 
// 必须先赋值为false,再移除属性 
checkedbrowser[i].checked = false; 
// 不移除属性也可以 
//checkedbrowser[i].removeAttribute("checked"); 
} 

}); 
}); 
</script> 
</head> 
<body> 
<p>您喜欢哪款浏览器？</p> 

<form> 
<input style="display:none;" id="hidebrowser" type="radio" name="browser" value=""> 
<input type="radio" name="browser" value="Internet Explorer">Internet Explorer<br /> 
<input type="radio" name="browser" value="Firefox">Firefox<br /> 
<input type="radio" name="browser" value="Netscape">Netscape<br /> 
<input type="radio" name="browser" value="Opera">Opera<br /> 
<br /> 
<input type="button" id="cancel" value="取消选中方式1" size="20"> 
<input type="button" id="byhide" value="取消选中方式2" size="20"> 
<input type="button" id="remove" value="取消选中方式3" size="20"> 
</form> 

</body> 
</html>

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