如何實(shí)現(xiàn)瀑布流布局

發(fā)布時(shí)間：2020-07-13 14:35:04 來源：億速云閱讀：137 作者：Leah 欄目：web開發(fā)

如何實(shí)現(xiàn)瀑布流布局？針對(duì)這個(gè)問題，這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答，希望可以幫助更多想解決這個(gè)問題的小伙伴找到更簡(jiǎn)單易行的方法。

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>waterfall layout</title>
<link type="text/css" href="./imgs/wf.css" rel="stylesheet"/> 
<script type="text/javascript" src="./imgs/wf.js"></script>
</head>
<body>
<div id="main">
    <div class="box">
        <div class="pic">
            <img src="imgs/0.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/1.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/2.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/3.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/4.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/5.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/6.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/7.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/8.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/9.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/10.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/11.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/12.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/13.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/14.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/15.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/16.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/17.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/18.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/19.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/20.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/21.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/22.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/23.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/24.jpg"/>
        </div>
    </div>
    <div class="box">
        <div class="pic">
            <img src="imgs/25.jpg"/>
        </div>
    </div>
</div>
</body>
</html>

wf.css

@CHARSET "UTF-8";
*{margin:0;padding:0}
#main{
    position: relative;
    margin: 10px auto 0 auto;
}
.box{
    float:left;
    padding: 0 0 15px 15px; 
}
.pic{
    border: 1px solid #ccc;
    padding: 10px;
}
.box img{
    width: 200px;
    height: auto;
}

wf.js

window.onload = function(){
    waterfall();
    //要加載的數(shù)據(jù)，暫時(shí)寫一個(gè)固定數(shù)據(jù)
    var dataInt = {"data":[{"src":'3.jpg'},{"src":'13.jpg'},{"src":'23.jpg'},{"src":'1.jpg'}]};
    //一個(gè)判斷拖動(dòng)滾動(dòng)條后是否加載新內(nèi)容的方法
    window.onscroll = function(){
        if(checkScrollSlide()){
            //將數(shù)據(jù)塊渲染到當(dāng)前頁(yè)的尾部
            for(var i = 0; i < dataInt.data.length;i++){
                var parent = document.getElementById('main');
                var newBox = document.createElement('p');
                newBox.className = 'box';
                parent.appendChild(newBox);
                var newPic = document.createElement('p');
                newPic.className = 'pic';
                newBox.appendChild(newPic);
                var newImg = document.createElement('img');
                newImg.src = "./imgs/" + dataInt.data[i].src;
                newPic.appendChild(newImg);
                waterfall();
            }
        }
    }
}
function waterfall(){
    var parent = document.getElementById("main");
    //寫一個(gè)方法根據(jù)類名box，找到所有節(jié)點(diǎn)
    var boxArr = getByClass(parent,'box');
    //console.log(boxArr.length);//26，檢驗(yàn)是否獲取到
    var bodyWidth = document.body.clientWidth;
    //document.body.clientWidth  窗口實(shí)時(shí)顯示時(shí)的body的寬度
    var colWidth = boxArr[0].offsetWidth;//box p的寬度
    var cols = Math.floor(bodyWidth / colWidth);
    //給main p一個(gè)寬度，從而讓顯示內(nèi)容不會(huì)隨著浮動(dòng)，改變布局
    var mainWidth = colWidth * cols;
    parent.style.cssText = 'width:' + mainWidth + 'px;';
    var colsHeight = [];//放列高度的數(shù)組
    for(var i = 0; i < boxArr.length;i++){
        var iBox = boxArr[i];
        if(i < cols){
            colsHeight.push(iBox.offsetHeight);
        }else{
            var rArr = searchMin(colsHeight);
            var index = rArr[0];
            var minH = rArr[1];
            var left = parseInt(index * colWidth);
            var top = minH;
            iBox.style.position = "absolute";
            iBox.style.left = left + 'px';
            iBox.style.top = top + 'px';
            colsHeight[index] += iBox.offsetHeight;
        }
    }
}

function getByClass(parent,clsName){
    //用通配符獲得prent下的所有標(biāo)簽節(jié)點(diǎn)
    var allTags = document.getElementsByTagName("*");
    var arr = new Array();
    for(var i = 0; i < allTags.length;i++){
        if(allTags[i].className == clsName){
            arr.push(allTags[i]);
        }
    }
    return arr;
}
function searchMin(arr){
    var min = arr[0];
    var index = 0;
    for(var j = 0; j < arr.length; j++){
        if(arr[j] < min){
            min = arr[j];
            index = j;
        }
    }
    return [index,min];    
}
function checkScrollSlide(){
    var parent = document.getElementById('main');
    var boxArr = getByClass(parent,'box');
    var lastBox = boxArr[boxArr.length-1];
    var lbHeight = lastBox.offsetTop+Math.floor(lastBox.offsetHeight/2);
    console.log(lbHeight);
    var slideH = document.body.scrollTop || document.documentElement.scrollTop;
    console.log(slideH);
    var winH = document.body.clientHeight || document.documentElement.clientHeight;
    console.log(winH);
    var swHeight = slideH + winH;
    return (lbHeight < swHeight) ? true : false;
}

關(guān)于如何實(shí)現(xiàn)瀑布流布局問題的解答就分享到這里了，希望以上內(nèi)容可以對(duì)大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關(guān)注億速云行業(yè)資訊頻道了解更多相關(guān)知識(shí)。

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