javascript - 在.js文件中获取.aspx控件ID

大家好，

（头部）

<script type="text/javascript">

function ChangeColor1(elementid)
{
document.getElementById(elementid).style.backgroundImage = "url('images/1.jpg')";
document.getElementById("<%= img2.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img3.ClientID%>").style.backgroundImage = "url'images/2.jpg')";
document.getElementById("<%= img4.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= imgchange.ClientID%>").style.backgroundImage = "url('images/img1.JPG')";
}

function ChangeColor2(elementid)
{
document.getElementById(elementid).style.backgroundImage = "url('images/1.jpg')";
document.getElementById("<%= img1.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img3.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img4.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= imgchange.ClientID%>").style.backgroundImage = "url('images/img2.JPG')";
}

function ChangeColor3(elementid)
{
document.getElementById(elementid).style.backgroundImage = "url('images/1.jpg')";
document.getElementById("<%= img1.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img2.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img4.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= imgchange.ClientID%>").style.backgroundImage = "url('images/img3.JPG')";
}
function ChangeColor4(elementid)
{
document.getElementById(elementid).style.backgroundImage = "url('images/1.jpg')";
document.getElementById("<%= img2.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img3.ClientID%>").style.backgroundImage = "url('images/2.jpg')";
document.getElementById("<%= img1.ClientID%>").style.backgroundImage =  "url('images/2.jpg')";
document.getElementById("<%= imgchange.ClientID%>").style.backgroundImage = "url('images/img4.JPG')";
}
</script>

（身体的一部分）

<table>
<tr>
<td id="img1" runat="server" onmouseover="ChangeColor1(this.id)"
    style="background-image: url('images/2.jpg')">
</td>
</tr>
<tr>
<td id="img2" runat="server" onmouseover="ChangeColor2(this.id)"
    style="background image: url('images/2.jpg')">
</td>
</tr>
<tr>
<td id="img3" runat="server" onmouseover="ChangeColor3(this.id)"
    style="background-image: url('images/2.jpg')">
</td>
</tr>
<tr>
<td id="img4" runat="server" onmouseover="ChangeColor4(this.id)"
    style="background-image: url('images/2.jpg')">
</td>
</tr>
</table>

该代码在.ASPX页中正常工作。

但是，当我将此脚本代码放入.js文件并在.ASPX页面的开头部分调用它时，此.js文件无法正常工作。

td的ID = img2，ID = img3，ID = img4没有在.js文件中传递。

如何在.js文件中传递所有ID？

最佳答案

在aspx页面上写

<script>
var img1 = '<%= img1.ClientID%>';
var img2= '<%= img2.ClientID%>';
var img3= '<%= img3.ClientID%>';
var img4= '<%= img4.ClientID%>';
var imgchange= '<%= imgchange.ClientID%>';
</script>

在.js文件中做

function ChangeColor1(elementid) {
document.getElementById(img1).style.backgroundImage = "url('images/1.jpg')";
document.getElementById(img2).style.backgroundImage = "url('images/2.jpg')";
document.getElementById(img3).style.backgroundImage = "url('images/2.jpg')";
document.getElementById(img4).style.backgroundImage = "url('images/2.jpg')";
}

试试这个会帮助你