JS window.name跨域封装

JS window.name 跨域封装

 function CrossDomainName(target, agent, callback, security) {
     if (typeof target !== 'string' || typeof agent !== 'string' || typeof callback !== 'function') {
         throw '参数错误';
     }
     this.state = 0;
     this.target = target;//目标路径
     this.agent = agent;//代理文件
     this.callback = callback || Function;//回调函数
     this.security = security || true;
     this.iframe = document.createElement('iframe');
     var self = this;
     function onload() {
         if (self.state === 1) {
             var data = self.iframe.contentWindow.name;
             self.callback.call(self.iframe, data);
             if (self) {
                 self.iframe.contentWindow.document.close();//关闭文档流
                 self.iframe.contentWindow.close();//关闭Iframe
                 document.body.removeChild(self.iframe);//移除Iframe
             }
         } else if (self.state === 0) {
             self.state = 1;
             self.iframe.contentWindow.location = self.agent;
         }
     }
     if (document.attachEvent) {
         this.iframe.attachEvent('onload', onload);
     } else if (document.addEventListener) {
         this.iframe.addEventListener('load', onload, false);
     } else {
         this.iframe.onload = onload;
     }
     this.iframe.src = this.target;
     document.body.appendChild(this.iframe);
 }
 //调用
 new CrossDomainName('http://www.kingwell.com/kingwell.html', 'http://name.b.com/adfas.html', function (data) {
     alert(data);
 });