<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.active{
color:red;
}
</style>
</head>
<body>
<form action="s4.html" method="post" id="f1">
<div>
<input type="text">
</div>
<div>
<input type="text">
</div>
<div>
<input type="text">
</div>
<div>
<input type="text">
</div>
<div>
<input type="submit" value="提交">
</div>
</form>
<script src="../jquery-2.12.4.js"></script>
<script>
$(‘#f1‘).find(‘:submit‘).click(function () {
var tag = true;
$(‘.active‘).remove();
$(‘#f1‘).find(‘:text‘).each(function () {
if($(this).val().length<=0){
tag = false;
span = document.createElement(‘span‘);
span.innerText = ‘必填‘;
$(span).addClass(‘active‘);
$(this).after(span);
}
});
return tag;
})
</script>
</body>
</html>
原文地址：https://www.cnblogs.com/my-love-is-python/p/9310682.html
时间： 2024-10-16 04:34:41