readOnly 屬性設(shè)置或返回文本域是否為只讀。
textObject.readOnly=true|false
下面的例子將文本域設(shè)置為只讀:
<html>
<head>
<script type="text/javascript">
function makeReadOnly()
{
document.getElementById("text1").readOnly=true
}
</script>
</head>
<body>
<form>
<input type="text" id="text1" value="Hello World!" />
<input type="button" onclick="makeReadOnly()" value="Make read-only" />
</form>
</body>
</html>
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