document.form1.（可以根据id=“” 和name=" "）.value得到值

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<html >
<head>
<script language="JavaScript">
function check() {
//alert(document.form1.tian.value+"aaaaaaa");//对name="tian" 试用
alert(document.form1.zhanghao1.value+"bbbbbb");//document.form1.zhanghao1.value+"bbbbbb" 对Id=“zhanghao1” 也试用
//window.alert("进入JavaScript");
var valid = true;
var q = document.getElementById("zhanghao1").value;
alert(q+"cccccc")
if (q == "") {
window.alert("aaaaaaaaaaa");
}
if (valid == false)
document.form1.submit();
}

function Click() {
alert( document.getElementById("button").value);
console.log(document.getElementById("button").value)

}
</script>
</head>
<body>
<form name="form1" action="qqq" method="post" >
<p>Zhanghao: <input type="text" name="tian" id="zhanghao1" /></p>
<input type="text" id="button1" value="Click Me"/>
<input type="text" id="button" value ="tian" onClick="Click() "/>
<input type="button" name="aaaaa" value="aaaa" onClick="check()"/>
</body>
</html>

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