用'\\'替换'\'js怎么写呀？

<script>
s="a\\b"
s=s.replace(/\\/g,"\\\\")
alert(s)
</script>

解决方案 »

  1.   

    对不对你执行一次看看<script>
    s="a\\b"
    alert(s)
    s=s.replace(/\\/g,"\\\\")
    alert(s)
    </script>
      

  2.   

    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
    <HTML>
    <HEAD>
    <TITLE> New Document </TITLE>
    <META NAME="Generator" CONTENT="EditPlus">
    <META NAME="Author" CONTENT="">
    <META NAME="Keywords" CONTENT="">
    <META NAME="Description" CONTENT="">
    </HEAD><BODY>
    <SCRIPT LANGUAGE="JavaScript">
    <!--

    s="a\\b"
    alert(s)
    s=s.replace(/\\/g,"\\\\")
    alert(s)
    //-->
    </SCRIPT>
    </BODY>
    </HTML>