App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
<script>
function displayResult(){
    var x=document.getElementById("button1").type;
    alert(x);
}
</script>
</head>
<body>
<form>
<input type="button" onclick="displayResult()" value="显示按钮类型" id="button1">
</form>
</body>
</html>
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