<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus?">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>聚焦离焦事件</title>
</head>
<script type="text/javascript">
<!--
function fun(obj,e){
//拿到按键的asc码
var key = e.keyCode;
obj.value = key;
}
//-->
</script>
<body>
<input type="text" name="" onkeypress = "fun(this,event)"> <!--显示按键的ascii-->
</body>
</html>
提交事件
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus?">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>提交事件</title>
</head>
<script type="text/javascript">
<!--
function check(form){
//拿到文本框中的内容
var txt = form.username.value;
//判断内容
if(txt == ""){
document.getElementById("sname").innerHTML = "<font color = red>姓名必填</font>";
form.username.focus();
return false;
}
return true;
}
//-->
</script>
<body>
<form method = "post" action="2.html" onsubmit = "return check(this)">
姓名:<input type="text" name="username"><span id="sname"></span><br>
<input type="submit" value="提交">
</form>
</body>
</html>
时间： 2024-08-15 00:38:19