举一个栗子:
 <ul class="slide">
			<li><a href="www.baidu.com"><img src="images/slide01.png" alt="幻灯片01" ></a></li>
			<li><a href="#"><img src="images/slide02.jpg" alt="幻灯片02" ></a></li>
			<li><a href="#"><img src="images/slide03.jpg" alt="幻灯片03" ></a></li>
			<li><a href="#"><img src="images/slide04.jpg" alt="幻灯片04" ></a></li>
		</ul>
这是一个轮转图,图片已经安插好了,如果要把图片用json中的url链接更换,我们可以这样做:
 <ul class="slide">
			<li><a href="www.baidu.com"><img src="images/slide01.png" alt="幻灯片01" class="img1"></a></li>
			<li><a href="#"><img src="images/slide02.jpg" alt="幻灯片02" class="img2"></a></li>  // 创建一个class(在css中没有的) //
			<li><a href="#"><img src="images/slide03.jpg" alt="幻灯片03" class="img3"></a></li>
			<li><a href="#"><img src="images/slide04.jpg" alt="幻灯片04" class="img4"></a></li>
		</ul>
//接着加一个jQuery//
 <script>
			let adlist = {
			   "adlist": [
				  {
					"index":"1",
					"name":"创意广告5555",
					"img":"http://47.105.60.171/course/img/ad1.jpg",
					"url":"http://47.105.60.171/course/ad.html"
				  },
				  {
					"index":"2",
					"name":"创意广告999",
					"img":"http://47.105.60.171/course/img/ad2.jpg",
					"url":"http://47.105.60.171/course/ad.html"
				  },
				  {
					"index":"3",
					"name":"创意广告3",
					"img":"http://47.105.60.171/course/img/ad3.jpg",
					"url":"http://47.105.60.171/course/ad.html"
				  },
				  {
					"index":"4",
					"name":"创意广告4",
					"img":"http://47.105.60.171/course/img/ad4.jpg",
					"url":"http://47.105.60.171/course/ad.html"
				  }      
			   ]
			}
			
			$(".box h4 span").text(adlist.adlist[0].name);
			$(".slide  .img1").attr("src",adlist.adlist[0].img);  //前面是一个class 后面也是,一定要有两个class才能成哦!// 
			$(".slide  .img2").attr("src",adlist.adlist[1].img);
			$(".slide  .img3").attr("src",adlist.adlist[2].img);
			$(".slide  .img4").attr("src",adlist.adlist[3].img);
			
		</script>
如果要替换文字,价格之类的也同理:
原文:
<ul class="goods_list fl">
<li>
<a href="#" class="goods_pic"><img src="images/goods/goods003.jpg" class="img5"></a>
<h4 class="w1"><a href="#" title="360手机 N6 Pro 全网通 6GB+128GB 极夜黑">潮人必备</a></h4>
<div class="prize i5">¥ 299.00</div>
</li>
</ul>
替换(在后面加):
 <script type="text/javascript">
  	let discount = {
			  
				   "discount": [
				      {
				        "goods":"罗技(Logitech)G502 炫光自适应游戏鼠标",
				        "descr":"罗技(Logitech)G502 炫光自适应游戏鼠标 RGB鼠标 FPS鼠标 吃鸡鼠标",
				        "img":"http://47.105.60.171/course/img/1.jpg",
				        "url":"http://47.105.60.171/course/ad.html",
				        "price":"379.00",
				        "dprice":"379.00"        
				      },
				      {
				        "goods":"Apple 妙控鼠标2/无线鼠标2代 - 银色",
				        "descr":"新年添心意,便捷新生活Apple产品的配件",
				        "img":"http://47.105.60.171/course/img/2.jpg",
				        "url":"http://47.105.60.171/course/ad.html",
				        "price":"522.00",
				        "dprice":"499.00"        
				      }
				   ]
				
			}
  		
			$(".goods_pic  .img5").attr("src",discount.discount[0].img);
			$(".goods_pic  .img6").attr("src",discount.discount[1].img);
			$(".goods_list .w1").text(discount.discount[0].goods);
			$(".goods_list  .w2").text(discount.discount[1].goods);
		    $(".goods_list .i5").text(discount.discount[0].price);
			$(".goods_list  .i6").text(discount.discount[1].price);
			
  </script>
原文:https://www.cnblogs.com/temaka/p/14842217.html