 
						网站加载的速度快的话,不会显示进度条加载时候的样式。
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//调用
| 1 2 3 4 | $.QianLoad.PageLoading({    sleep: 50});</script> | 
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | /** @Author: fanqian* @Date:   2016-06-15 12:34:55* @Website:   /* @使用请注明作者和网站*/$.QianLoad = {    PageLoading: function(options) {        var defaults = {            delayTime: 500, //页面加载完成后,加载进度条淡出速度            sleep: 0, //设置挂起,等于0时则无需挂起            css: '<style>*{margin:0;}.load-wrap{width:100%;height:100%;position:absolute;top:0;left:0;background:#ffffff}#pre-load{position:fixed;top:0;height:2px;background:#2085c5;transition:opacity .5s linear}#pre-load span{position:absolute;width:150px;height:2px;-webkit-border-radius:100%;-webkit-box-shadow:#2085c5 1px 0 6px 1px;opacity:1;right:-10px;-webkit-animation:pulse 2s ease-out 0s infinite}@-webkit-keyframes pulse{30%{opacity:.6}60%{opacity:0}to{opacity:.6}}</style>'            //进度条样式位置可以自己修改        }        var options = $.extend(defaults, options);        //在页面未加载完毕之前显示的loading Html自定义内容        $('head').append(defaults.css);        var _LoadingHtml = '<divclass="load-wrap"style="width:100%;height:100%;position:absolute;top:0;left:0;background:#ffffff"><divid="pre-load">' + '<span></span>' + '</div></div>';        //呈现loading效果        $("body").append(_LoadingHtml);        //监听页面加载状态        document.onreadystatechange = PageLoaded;        function PageLoaded() {            var loadingMask = $('#pre-load');            $({                property: 0            }).animate({                property: 98            }, {                duration: 3000,                step: function() {                    var percentage = Math.round(this.property);                    loadingMask.css('width', percentage + "%");                    //页面加载后执行                    if (document.readyState == "complete") {                        loadingMask.css('width', 100 + "%");                        setTimeout(function() {                                loadingMask.animate({                                        "opacity": 0                                    },                                    options.delayTime,                                    function() {                                        $(this).remove();                                        $(".load-wrap").remove();                                        console.log('Loading has been successful');                                    });                            },                            options.sleep);                    }                }            });        }    }} | 
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