document.querySelectorAll获取下img对象,然后for遍历replace下src的值就行,示例代码如下
<img src="http://www.baidu.com/img/01/tu1.png" width="150">
<img src="http://www.baidu.com/img/01/tu2.png" width="150">
<img src="http://www.baidu.com/img/01/tu3.png" width="150">
<img src="http://www.baidu.com/img/01/tu4.png" width="150">
<img src="http://www.baidu.com/img/01/tu5.png" width="150">
<img src="http://www.baidu.com/img/01/tu6.png" width="150">
<br />
<button onclick="changeSrc()">批量替换图片src</button>
<script>
function changeSrc() {
var imgs = document.querySelectorAll('img[src*="/01/"]');
for (var i = 0; i < imgs.length; i++)imgs[i].src = imgs[i].src.replace('/01/', '/02/');
}
</script>
有其他问题可以继续交流~