去除移动端alert弹框中title(网页地址)

function test(){
	// 覆盖默认alert方法
    window.alert = function (name) {
        var iframe = document.createElement("IFRAME");
        iframe.style.display = "none";
        iframe.setAttribute("src", 'data:text/plain,');
        document.documentElement.appendChild(iframe);
        window.frames[0].window.alert(name);
        iframe.parentNode.removeChild(iframe);
    };
  }
  alert('123')