微信分享相关的东西怎么动态修改呢？

首先我们配置一些基本参数:

wx.config({
	debug: false,
	appId: 'APPID',
	timestamp: 'TIMESTAMP',
	nonceStr: 'NONCESTR',
	signature: 'SIGNATURE',
	jsApiList: [
		// 所有要调用的 API 都要加到这个列表中
		'checkJsApi',
		'onMenuShareTimeline',
		'onMenuShareAppMessage',
		'onMenuShareQQ',
		'onMenuShareWeibo',
		'onMenuShareQZone',
		'hideMenuItems',
		'showMenuItems',
		'hideAllNonBaseMenuItem',
		'showAllNonBaseMenuItem',
		'translateVoice',
		'startRecord',
		'stopRecord',
		'onVoiceRecordEnd',
		'playVoice',
		'onVoicePlayEnd',
		'pauseVoice',
		'stopVoice',
		'uploadVoice',
		'downloadVoice',
		'chooseImage',
		'previewImage',
		'uploadImage',
		'downloadImage',
		'getNetworkType',
		'openLocation',
		'getLocation',
		'hideOptionMenu',
		'showOptionMenu',
		'closeWindow',
		'scanQRCode',
		'chooseWXPay',
		'openProductSpecificView',
		'addCard',
		'chooseCard',
		'openCard',
		'editAddress',
		'getLatestAddress'
	]
});

其次把分享内容存入widnow对象:

window.wxinfo = {
	'imgUrl': "分享图标",
	'lineLink': "分享链接",
	'shareTitle': "分享标题",
	'descContent': "分享内容--温馨提示：内容需要去除换行，否则会导致js报错",
	"setShareRecord":"成功回调",
};

把以下代码打包成.js文件引入到界面:

'use strict';

window.wxShare = {
    init: function init() {
        window.wxShare.methods.wxShareTo();
        this.attachEvent();
    },
    attachEvent: function attachEvent() {
    },
    methods: {
        wxShareTo: function wxShareTo() {
            wx.ready(function () {
                wx.checkJsApi({
                    jsApiList: [
                        'onMenuShareTimeline',
                        'onMenuShareAppMessage',
                        'onMenuShareQQ',
                        'onMenuShareWeibo',
                        'onMenuShareQZone',
                        'hideMenuItems'
                    ],
                    success: function (res) {
                        // alert(JSON.stringify(res));
                    }
                });
                wx.onMenuShareAppMessage({
                    title: window.wxinfo.shareTitle,
                    desc: window.wxinfo.descContent,
                    link: window.wxinfo.lineLink,
                    imgUrl: window.wxinfo.imgUrl,
                    trigger: function (res) {
                        // alert('用户点击发送给朋友');
                    },
                    success: function (res) {
                        window.wxShare.methods.setShareRecord("onMenuShareAppMessage",0);
                        // alert('已分享');
                    },
                    cancel: function (res) {
                        window.wxShare.methods.setShareRecord("onMenuShareAppMessage",1);
                        // alert('已取消');
                    },
                    fail: function (res) {
                        // alert(JSON.stringify(res));
                    }
                });
                wx.onMenuShareTimeline({
                    title: window.wxinfo.shareTitle,
                    desc: window.wxinfo.descContent,
                    link: window.wxinfo.lineLink,
                    imgUrl: window.wxinfo.imgUrl,
                    trigger: function (res) {
                        // alert('用户点击分享到朋友圈');
                    },
                    success: function (res) {
                        window.wxShare.methods.setShareRecord("onMenuShareTimeline",0);
                        // alert('已分享');
                    },
                    cancel: function (res) {
                        window.wxShare.methods.setShareRecord("onMenuShareTimeline",1);
                        // alert('已取消');
                    },
                    fail: function (res) {
                        // alert(JSON.stringify(res));
                    }
                });
                wx.onMenuShareQQ({
                    title: window.wxinfo.shareTitle,
                    desc: window.wxinfo.descContent,
                    link: window.wxinfo.lineLink,
                    imgUrl: window.wxinfo.imgUrl,
                    success: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareQQ",0);
                        // 用户确认分享后执行的回调函数
                    },
                    cancel: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareQQ",1);
                        // 用户取消分享后执行的回调函数
                    }
                });
                wx.onMenuShareWeibo({
                    title: window.wxinfo.shareTitle,
                    desc: window.wxinfo.descContent,
                    link: window.wxinfo.lineLink,
                    imgUrl: window.wxinfo.imgUrl,
                    success: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareWeibo",0);
                        // 用户确认分享后执行的回调函数
                    },
                    cancel: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareWeibo",1);
                        // 用户取消分享后执行的回调函数
                    }
                });
                wx.onMenuShareQZone({
                    title: window.wxinfo.shareTitle,
                    desc: window.wxinfo.descContent,
                    link: window.wxinfo.lineLink,
                    imgUrl: window.wxinfo.imgUrl,
                    success: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareQZone",0);
                        // 用户确认分享后执行的回调函数
                    },
                    cancel: function () {
                        window.wxShare.methods.setShareRecord("onMenuShareQZone",1);
                        // 用户取消分享后执行的回调函数
                    }
                });
            });
        },
        setShareRecord: function setShareRecord(type,status) {
            // 此分享记录回掉参数看自己业务需求改变
            var data ={
                title:window.wxinfo.shareTitle,
                url:window.wxinfo.lineLink,
                status:status,
                type:type
            };
            $.post( window.wxinfo.setShareRecord,data);
        }
    }
};
window.wxShare.init();

使用方法： 在在每次改变分享内容的时候把window对象里面的分享设置也改变一下，然后执行：

//列如: window.wxinfo.lineLink = 'http:www.putdownon.com';
window.wxShare.methods.wxShareTo();