一个简单的问题

Question

<input type="button" name="button" value="确定" />
<script type="text/javascript">
document.all("button").disabled="disabled";
</script>

Answer 1

<input id="btnOk" type="button" name="button" value="确定" />
<script type="text/javascript">
document.getElementById("btnOk").disabled="disabled";
</script>

Answer 2

document.getElementById("chaxun").disabled=true;
或者
document.getElementById("chaxun").disabled="disabled";

Answer 3

document.getElementById("chaxun").disabled="disabled";
document.getElementById("chaxun").disabled=true;