原生js实现简单瀑布流效果

CSS样式：

<style>
	.cont{margin: 0 auto;position: relative;}
	.box{float: left;padding: 5px;}
	.imgbox{border: black solid 1px;padding: 5px;border-radius: 5px;}
	.imgbox img{width: 200px;display: block;}
</style>

HTML结构:

<div class="cont">

	<div class="box">
		<div class="imgbox">
			<img src="img/1.jpg" >
		</div>
	</div>
	//......此处省略雷同代码
	<div class="box">
		<div class="imgbox">
			<img src="img/2.jpg" >
		</div>
	</div>
			
</div>

JavaScript代码：

<script>
	onload = function(){
		var wf = new WaterF();
		wf.init();
	}
	class WaterF{
		constructor(){
			this.clientW = document.documentElement.clientWidth;
			this.abox = document.querySelectorAll(".box");
			this.cont = document.querySelector(".cont");
		}
		init(){
			this.maxNum = parseInt(this.clientW / this.abox[0].offsetWidth);
			this.cont.style.width = this.maxNum * this.abox[0].offsetWidth + "px";

			this.firstLine();
			this.otherLine();
		}
		firstLine(){
			this.heightArr = [];
			for(var i=0;i<this.maxNum;i++){
				this.heightArr.push(this.abox[i].offsetHeight);
			}
		}
		otherLine(){
			for(var i=this.maxNum;i<this.abox.length;i++){
				var min = Math.min(...this.heightArr);
				var minIndex = this.heightArr.indexOf(min);
				this.abox[i].style.position = "absolute";
				this.abox[i].style.top = min + "px";
				this.abox[i].style.left = minIndex * this.abox[0].offsetWidth + "px";
				this.heightArr[minIndex] = this.heightArr[minIndex] + this.abox[i].offsetHeight;
			}
		}
	}
</script>