JavaScript打开新窗口被拦截问题

window.open(url);

<a href="http://www.baidu.com/" target="_blank"></a>

<a href="javascript:void(0)"  target="_blank" id="openWindow"></a>  

1 $("#openWindow").click(function(e){  
2     $(this).attr("href","http://www.baidu.com/");  
3 });  

1 function openWindow(url){  
2      var link = $("<a></a>").attr("href",url).attr("target","_blank");  
3      $("body").append(link);  
4      link[0].click();  
5      link.remove();  
6  }

1 function openWindow(url){  
2     var link = document.createElement(‘a‘);  
3     link.target = "_blank";  
4     link.href = url;  
5     document.body.appendChild(link);  
6     link.click();  
7     document.body.removechild(link);  
8 }