<img src="../../img/20190224185111.png" alt="" id="zhaopian"/>

--------------------------

//定义变量
var img = "";
//图片点击
$("#zhaopian").click(function () {
//赋值获取图片路径
img = $(this).attr('src');
//判断图片路径是否匹配
if (img == "../../img/20190224185111.png") {
//更改图片路径
$("#zhaopian").attr("src", "../../img/20190225140053.png")
}
else {
//更改照片路径
$("#zhaopian").attr("src", "../../img/20190224185111.png")
}