怎样实现点击“图2”按钮,把1.gif更新为2.gif,点击“图3”按钮,更新为3.gif?
<img src="1.gif">
<input name="button" type="button" value="图2" />
<input name="button" type="button" value="图3" />
请给出全部代码(我基础很差),谢谢了!
<img src="1.gif">
<input name="button" type="button" value="图2" />
<input name="button" type="button" value="图3" />
请给出全部代码(我基础很差),谢谢了!
<input name="button" type="button" value="图2" onclick="javascript:document.getElementById('i').src='2.gif'"/>
<input name="button" type="button" value="图3" onclick="javascript:document.getElementById('i').src='3.gif'"/>
<img src="1.gif" id="img1">
<input name="button" type="button" value="图2" onclick="changeImgsrc('img1','2.gif');" />
<input name="button" type="button" value="图3" onclick="changeImgsrc('img1','3.gif');/>
<script type="text/javascript">
function changeImgsrc(id,src)
{
var obj=document.getElementById(id);
if(obj && src) /*obj与src同时存在时,才更换*/
{
obj.src=src;
}
}
</script>