JS达成点击下载的小例子

复制代码 代码如下:

<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″
/>
 <a   href=”a.txt”   id=pic1   onclick=”savepic();return false;”  
style=”cursor:hand”>点击下载</a> 
          <script> 
                  function   savepic()
                { 
                  if(document.all.a1==null)
                        { 
                                 
objIframe=document.createElement(“IFRAME”); 
                                 
document.body.insertBefore(objIframe); 
                                  objIframe.outerHTML=   “<iframe  
name=a1   style=’width:0;hieght:0′  
src=”+pic1.href+”></iframe>”; 
                                  re=setTimeout(“savepic()”,1) 
                          } 
                 else
                        { 
                                  clearTimeout(re) 
                                  pic   =  
window.open(pic1.href,”a1″) 
                                  pic.document.execCommand(“SaveAs”) 
                                  document.all.a1.removeNode(true) 
                          }
                } 
          </script>

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