Jquery method to determine whether a radio button is selected: 1. Use the checked attribute to determine whether it is selected. The code is [if ($(this).attr("checked")) {alert("checked"); }]; 2. jquery gets the value of the radio button.
The operating environment of this tutorial: windows7 system, jquery3.2.1 version, Dell G3 computer.
Recommended: jquery video tutorial
Jquery method to determine whether the radio button is selected:
1. Use the checked attribute to judge the selection
radio cannot be judged by "checked" equality, only true is used to judge
The code is as follows:
<script type="text/javascript">
$(function () {
$("input").click(function () {
if ($(this).attr("checked")) {
alert("选中了");
}
});
});
</script>
</head>
<body>
<input type="radio"/>
</body>
</html>二, jquery gets the value of the radio radio button
The code is as follows:
$("input[name='items']:checked").val();Another: Determine whether the radio is selected and obtain the selected value
The code is as follows :
function checkradio(){
var item = $(":radio:checked");
var len=item.length;
if(len>0){
alert("yes--选中的值为："+$(":radio:checked").val());
}
}3. Get the value of a group of radio selected items
The code is as follows:
var item = $('input[name=items][checked]').val();
4. Settings The radio button is selected
The code is as follows:
$("input[type=radio]").attr("checked",'2');//设置value=2的项目为当前选中项Related free learning recommendations:js video tutorial
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