复制代码代码如下:
<script>
function doclick1 () {
var txtn = document.geteLementsByTagname ("input");
untuk (i = 0; i <txtn.length; i ++) {
if (txtn [i] .type = "text") {
txtn [i] .readOnly = false;
}
}
}
</script>
<input type = "text" id = "contactus1" readonly>
<input type = "text" id = "contactus2" readonly>
<input type = "text" id = "contactus3" readonly>
<input type = "tombol" name = "Button4" value = "修改" OnClick = "DOCLICK1 ();" />