实在搞不懂哪里我的代码哪里出问题了
lllmh
2018-08-24 13:57
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> 鼠标经过事件 </title>
<script type="text/javascript">
var psw=document.getElementById("psd");
function message(){
if(psw.value==""){
confirm("请输入密码后，再单击确定!"); }
}
</script>
</head>
<body>
<form>
密码:<input id="psd" name="password" type="password" >
<input name="确定" type="button" value="确定" onmouseover="message()"/>
</form>
</body>
</html>
2回答
-
- 慕粉4019690
- 2018-08-24 17:46:57
psw变量应该放在函数体
-
- 1frgdhf
- 2019-01-17 10:56:35
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> 鼠标经过事件 </title>
<script type="text/javascript">
function message(){
var psw=document.getElementById("psd");
if(psw.value==""){
confirm("请输入密码后，再单击确定!"); }
}
</script>
</head>
<body>
<form>
密码:<input id="psd" name="password" type="password" >
<input name="确定" type="button" value="确定" onclick="message()"/>
</form>
</body>
</html>
JavaScript进阶篇
468061 学习 · 21891 问题
相似问题