<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<title>Title</title>
</head>
<body>
<form id="form">
<input id="a" type="text" title="1">
<input id="b" type="text" title="2">
<input id="c" type="text" title="3">
<button>23</button>
</form>
</body>
</html>
<script type="text/javascript">
var form = document.getElementById('form');
form.addEventListener('blur', hand,true)
function hand(event) {
event.stopPropagation();
var tar=event.target;
if(!tar.value){
alert("!");
tar.value=" ";
setTimeout(function (){
tar.value="";
},0);
tar.focus();
}
}
</script>
热门评论
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纯情掉了一地2018-01-22 0
查看全部评论咋弄啊 我这个办法感觉有点问题？？？？有其他方式吗？？？？