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我解决了问题。我只是删除了VAR iimg并添加到功能图片来源更改取决于选择的选项
document.getElementByID("compareimg1").src = "../images/galaxy_s4.png";
form标签:
<form>
<select id="select1" onchange="func1()">
<option disabled selected value="choose1">
CHOOSE
</option>
<option value="i2g" id="i2g">
iPhone 2g
</option>
</select>
</form>
表标签:
<table id="comparetable1" class="ib5" border="1">
<tr>
<td id="logotd">
<img src="../images/logo.png" id="logoimg" />
</td>
<td id="compareimg1td">
<img id="compareimg1" />
</td>
<td id="compareimg2td">
<img src="../images/galaxy_s.png" id="compareimg2" />
</td>
</tr>
</table>
和脚本:
<script>
var ip2g = document.getElementById("i2g");
var iimg = document.getElementById("compareimg1").src;
function func1(){
if (ip2g.selected === true){
iimg = "../images/galaxy_s4.png";
}
}
</script>
问题是,当我选择一个opti从下拉菜单中,它不会在表格中加载图像。