飘窗原生js效果

css:

.close {
             30px;
            height: 20px;
            background: white;
            position: absolute;
            right: 0;
            top: 0;
            z-index: 999;
            font-size: 12px;
            text-align: center;
            line-height: 20px;
            cursor: pointer;
            font-family: '微软雅黑';
        }

　　

js:【修改了一些bug】

window.onload = function () {

        /*
            参数
            1. 创建飘窗，填写飘窗的id；
            2. 选择该飘窗是否显示，true显示，false不显示，默认为false，不显示；
            3. 该飘窗的配置信息， xPos,yPos          飘窗的起始位置，默认为左上角，
                               imgWidth,imgHeight   飘窗的大小，默认为w: 310,h: 200，
                               href                 要跳转的链接，默认不跳转，
                               imgSrc               图片的链接，默认为空。
         */
        var fl1 = new FloatWindow('win', true, {
            xPos: 100,
            yPos: 100,
            href: 'http://websong.wang',
            imgSrc: 'https://bpic.588ku.com/art_origin_min_pic/18/07/08/02ced7cd66e3a1341391af9ceb90ec62.jpg'
        });

    }

    var FloatWindow = function (ele, flag, config) {

        flag = flag ? true : false;

        this.opt = this.extend({
            xPos: 0,
            yPos: 0,
            imgWidth: 100,
            imgHeight: 100,
            href: 'javascript:void(0)',
            imgSrc: '',
            step: 1,
            height: 0,
            Hoffset: 0,
            Woffset: 0,
            xon: 0,
            yon: 0
        }, config);
    
        var html = '<span id="' + ele + '" class="floatWin" style="position:absolute; z-index: 1000;"  >' +
            '<a href="' + this.opt.href + '" target="_blank">' +
            '<img src="' + this.opt.imgSrc + '" border="0">' +
            '</a>' +
            '<div class="close">关闭</div>' +
            '</span>';
            var div = document.createElement('div');
            div.innerHTML = html;  
                        
        if (flag) {                                 
            document.body.appendChild(div);
        } else {
            return;
        }
        
        if (document.querySelector('#'+ele).length <= 0) {
            return;
        }

        this.ele = document.querySelector('#'+ele);
        this.interval;
        this.delay = 10;

        this.ele.querySelector('img').style['width'] = this.opt.imgWidth + 'px';
        this.ele.querySelector('img').style['height']= this.opt.imgHeight + 'px';

        var _self = this;

    
        this.ele.onmouseout = function () {
            _self.start();
        }

        this.ele.onmouseover = function () {
            _self.stop();
        }

        this.ele.onclick = function (e) {
            if (e.target.className === 'close')
            _self.stop();
            document.body.removeChild(div);
        }

        changePos = function (ele, moveCfg) {
            width = document.documentElement.clientWidth || document.body.clientWidth;
            height = document.documentElement.clientHeight || document.body.clientHeight;
            Hoffset = ele.offsetHeight;
            Woffset = ele.offsetWidth;
            if (moveCfg.yon) {
                moveCfg.yPos = moveCfg.yPos + moveCfg.step;
            } else {
                moveCfg.yPos = moveCfg.yPos - moveCfg.step;
            }
            if (moveCfg.yPos < 0) {
                moveCfg.yon = 1;
                moveCfg.yPos = 0;
            }
            if (moveCfg.yPos >= (height - Hoffset)) {
                moveCfg.yon = 0;
                moveCfg.yPos = (height - Hoffset);
            }
            if (moveCfg.xon) {
                moveCfg.xPos = moveCfg.xPos + moveCfg.step;
            } else {
                moveCfg.xPos = moveCfg.xPos - moveCfg.step;
            }
            if (moveCfg.xPos < 0) {
                moveCfg.xon = 1;
                moveCfg.xPos = 0;
            }
            if (moveCfg.xPos >= (width - Woffset)) {
                moveCfg.xon = 0;
                moveCfg.xPos = (width - Woffset);
            }
            ele.style.left = moveCfg.xPos + document.body.scrollLeft + "px";
            ele.style.top = moveCfg.yPos + document.documentElement.scrollTop + "px";
        }

        this.start();
    }

    FloatWindow.prototype.start = function () {
        var that = this;
        this.ele.visibility = 'visible';
        this.interval = setInterval(function () {
            changePos(that.ele, that.opt);
        }, this.delay);
    }

    FloatWindow.prototype.stop = function () {
        clearInterval(this.interval)
    }

    FloatWindow.prototype.extend = function (o, e) {
        for (var key in e) {
            if (e[key]) {
                o[key] = e[key];
            }
        }
        return o;
    }