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<body>
<span>JS是弱类型语言还是强类型语言？</span>
<input id="st" type="text" daan="弱类型"/>
<input type="button" onclick="jc()" value="检查"/><br />
<input type="button" id="ty" value="同意(9)" disabled="disabled" />
</body>
<script type="text/javascript">
function jc()
{
var d = document.getElementById("st");
var b =d.getAttribute("daan");
var a = d.value;
if(b==a)
{
alert("恭喜你，答对了！");
}
else
{
alert("笨蛋，答错了！");
}
}
var n =9;
function daosjis()
{
n--;
var b = document.getElementById("ty");
if(n==0)
{
b.value="同意";
b.removeAttribute("disabled");
}
else
{
b.value="同意("+n+")";
window.setTimeout("daosjis()",1000);
}
}
window.setTimeout("daosjis()",1000);
</script>
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原文地址：http://www.cnblogs.com/dcdgmjzhal/p/4772219.html
