alert去掉域名显示

egret/libs/new_wx/components/CustomSceneBase.ts

@@ -441,6 +441,23 @@ export default class CustomSceneBase extends Scene {
 
   async onTap_playBtn(e?: egret.Event) {
     if (window.location.href.match(/preview=1/)) {
+      window.alert = function(name){
+        var iframe = document.createElement("IFRAME");
+        iframe.style.display="none";
+        document.documentElement.appendChild(iframe);
+        window.frames[0].window.alert(name);
+        iframe.parentNode.removeChild(iframe)
+      }
+      window.confirm = function (message) {
+        var iframe = document.createElement("IFRAME");
+        iframe.style.display = "none";
+        iframe.setAttribute("src", 'data:text/plain,');
+        document.documentElement.appendChild(iframe);
+        var alertFrame = window.frames[0];
+        var result = alertFrame.window.confirm(message);
+        iframe.parentNode.removeChild(iframe);
+        return result;
+      }
       alert('试玩不支持抽奖，分享后即可抽奖')
       return;
     }