`

"瀑布流"2

    博客分类：
  • HTML
 
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<!doctype html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <title>瀑布流</title>
        <script src="https://raw.github.com/RubyLouvre/mass-Framework/master/client/mass.js"></script>
        <script>
            window.onerror = function(){
               location.reload();//如果报错，请它自动刷新。
            }
            $.require("more/random,ready,css,event",function(random){
                //容器的CSS表达式，列数，每列的宽度
                var Waterfall = function(expr, col, colWidth){
                    //构建整体轮廓
                    var container = this.container = $(expr);
                    var pw = container.width();//容器的宽
                    var gw = (pw - col * colWidth)/(col-1);//列间距离
                    this.colWidth = colWidth;
                    this.cols = [];
                    for(var i = 0; i < col ; i++){//随机生成列
                        this.cols[i] = $("<div class='waterfall' />").css({
                            position: "absolute",
                            top: 0,
                            left: (colWidth + gw) * i,
                            width: colWidth,
                            backgroundColor: random.hex()
                        }).appendTo(container);
                    }
                }
                Waterfall.prototype = {
                    //添加板块
                    addBlocks : function(){
                        for(var i = 0; i < 40; i++){//随机生成40个板砖
                            $("<div class='waterfall_block' />").css({
                                margin: 5,
                                width: this.colWidth - 10 ,
                                height: random.num(80, 300),
                                backgroundColor: random.hex()
                            }).appendTo( this.whichCol() );
                        }
                    },
                    //计算出最短的栏栅
                    whichCol:function(el, ret, h){
                        for(var i = 0, shortest = 0; el = this.cols[i]; i++){
                            h = el.height();
                            if(i == 0){
                                shortest = h;
                                ret = el;
                            }
                            if(h < shortest ){
                                shortest = h;
                                ret = el;
                            }
                        }
                        return ret;
                    }
                };

                var waterfall = new Waterfall("body",4,300)
                waterfall.addBlocks();
                $(window).scroll(function(){
                    var clientHeight = $(window).height(),
                    scrollTop = $(window).scrollTop(),
                    scrollHeight = $(document).height();
                    if(clientHeight + scrollTop >=  scrollHeight ){
                        waterfall.addBlocks();
                    }
                })
            })
        </script>
    </head>
    <body>
        <p>
            瀑布流 by 司徒正美
        </p>
    </body>
</html>

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