Question

同一个页面js按钮一个有效一个无效

<-- JS代码如下 -->
<script>
window.onload = function ()
{
var shit = !-[1, ];
var oWin = document.getElementById("win");
var oLay = document.getElementById("overlay");
var oBtn = document.getElementsByTagName("button")[0];
var oClose = document.getElementById("close");

var bDrag = false;
var disX = disY = 0;
var iScrollT = document.documentElement.scrollTop || document.body.scrollTop;
var iScrollL = document.documentElement.scrollLeft || document.body.scrollLeft;

oBtn.onclick = function ()
{
oLay.style.display = "block";
oWin.style.display = "block";
shit && (oLay.style.height = document.body.offsetHeight + "px");
};
oClose.onclick = function ()
{
oLay.style.display = "none";
oWin.style.display = "none";

};
oClose.onmousedown = function (event)
{
(event || window.event).cancelBubble = true;
};

document.onmousemove = function (event)
{
if (!bDrag) return;
var event = event || window.event;
var iL = event.clientX - disX + iScrollL;
var iT = event.clientY - disY + iScrollT;
var maxL = document.body.clientWidth - oWin.offsetWidth;
var maxT = document.body.clientHeight - oWin.offsetHeight;
iL = iL < 0 ? 0 : iL;
iL = iL > maxL ? maxL : iL;
iT = iT < 0 ? 0 : iT;
iT = iT > maxT ? maxT : iT;

oWin.style.marginTop = oWin.style.marginLeft = 0;
oWin.style.left = iL + "px";
oWin.style.top = iT + "px";
return false
};

};
</script>
<!-- 按钮代码如下-->

Answer 1

document.getElementsByTagName("button")[0];
很明显的这段代码只会找第一个button的按钮
用jquery实现吧！
$("button");

追问

怎么把他设置成变化的呢？我按哪个按钮他就调取那个的值

追答

$("button") 这个就是所有的按钮都能弄到的！

Answer 2

代码是重复的?把完整的html发上来，我来调试一下