EXT微信公众号展示二维码页面js

/**
* 点赞活动二维码关注页面
*/
var qrcodeImg = getPArray('qrcodeImg');

var width = Ext.Viewport.element.getWidth();
var height = Ext.Viewport.element.getHeight();

Ext.define('WxCPICView', {
id:'wx_cpic_view',
extend: 'Ext.form.Panel',
initialize : function(){
commonBack(this,'XX公众号','','');
},
config: {
layout:'vbox',
scrollable: 'y',
items: [
{
html : '<div id="twocode" style="width:230px;height:230px;margin:100px auto;"></div>'
}]
}
});

var mainView = Ext.create('WxCPICView',{id:'wx_cpic_view'});
Ext.Viewport.setActiveItem(mainView);

if(qrcodeImg){
var img = new Image();
img.src = qrcodeImg;
var qrcode = new QRCode(document.getElementById("twocode"), {
width : 230,//设置宽高
height : 230
});
qrcode.makeCode(img);
}else{
Ext.toast("二维码不存在，请联系管理员或稍后再试...", 2000);
}