[英]Radio button validation using JavaScript
This is my form 这是我的表格
Select Staff : <select name="Staff" id="Staff"><br />
<option value="Staff">Select Staff</option>
The validation for the form is as simple this 表单验证很简单
<script type="text/javascript" language="javascript">
function validateMyForm ( ) {
var isValid = true;
if ( document.form1.Name.value == "" ) {
alert ( "Please type your Name" );
isValid = false;
} else if ( document.form1.Staff.value == "Staff" ) {
alert ( "Please choose Staff" );
isValid = false;
}
return isValid;
}
</script>
How do I validate radio buttons using JS ? 如何使用JS验证单选按钮?
<input type="radio" name="question" id="question_yes" value="Yes" />Yes<br>
<input type="radio" name="question" id="question_no" value="No" />No
<script>
if(document.getElementById('question_yes').checked) {
// yes is checked
}else if(document.getElementById('question_no').checked) {
// no is checked
}
</script>
Here's a jsFiddle to show you how it works: http://jsfiddle.net/A3fg8/ 这是一个jsFiddle来向您展示其工作原理: http : //jsfiddle.net/A3fg8/
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