微信图片预览

   wx.config({
        debug: false,
        appId: '',
        timestamp: ,
        nonceStr: '',
        signature: '',
        jsApiList: [
            // 所有要调用的 API 都要加到这个列表中
            'onMenuShareTimeline',
            'onMenuShareAppMessage',
            'previewImage',
            'hideMenuItems'
        ]
    });

 wx.ready(function () {

        wx.hideMenuItems({
            menuList: [
//                'menuItem:share:appMessage'
            ] // 要隐藏的菜单项，只能隐藏“传播类”和“保护类”按钮，所有menu项见附录3
        });

        //分享到朋友圈
            wx.onMenuShareTimeline({
                title: '',
                desc: '',
                link: delQueStr(),
                imgUrl: '',
                success: function (res) {
                    alert('分享成功');
                }
            });
        //分享给朋友
        wx.onMenuShareAppMessage({
            title: '',
            desc: '',
            link: delQueStr(),
            imgUrl: '',
            success: function (res) {
                alert('分享成功');

            }
        });
        //预览图片
        var imgsurl=[];
        var nowurl='';
        var imgObj=$(".List .group_bottom img");
        // console.log("111")
        for(var i=0;i<imgObj.length;i++){
            imgsurl[i]=imgObj[i].src;
            imgObj[i].onclick = function(){
                nowurl=this.src;
                wx.previewImage({
                    current: nowurl,
                    urls: imgsurl
                });             
            }
        }

    });