javascript实现点击链接后页面不刷新不跳转

实现点击链接后页面不刷新不跳转?

<script language="javascript" type="text/javascript">
  function deleteHrefs(){
    var x = document.getElementsByTagName("a");
    for(var i = 0;i<x.length;i++){
        x[i].href="javascript:void(0)";
        x[i].target="_self";  
    }
  }
</script>