getCode() {
	if (sessionStorage.getItem("openid") && sessionStorage.getItem("openid") != "undefined") {
		return false;
	}
	var code = this.getUrlParam('code')
	var local = window.location.host;
	if (code == null || code === '') {
		window.location.href = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' + this.appId +
			'&redirect_uri=' + encodeURIComponent(local) +
			'&response_type=code&scope=snsapi_base&state=#wechat_redirect'
	} else {
		this.getOpenId(code)
	}
},
getUrlParam(name) {
	let reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)')
	let r = window.location.search.substr(1).match(reg)
	if (r != null) {
		return unescape(r[2])
	}
	return null
},
getOpenId(code) {
	console.log(code);
	// 调用后端接口传入code授权
}