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正则表达式中使用变量赋值

<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%20language%3D%22javascript%22%3E%20%0D%0Afunction%20check()%20%0D%0A%7B%20%0D%0Avar%20str%3Ddocument.getElementById(%22input1%22).value%20%0D%0Avar%20s%3D%22%5E%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%24%22%20%0D%0Avar%20re%20%3D%20new%20RegExp(s%2C%20%22ig%22)%3B%20%0D%0Aalert(re.test(str))%20%0D%0A%7D%20%0D%0A%3C%2Fscript%3E"> 
<input id="input1" value="正则表达式"> 
<input type="button" value="确定" onclick="check()">

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<img src="/_New/_cj/myeditor/sysimage/space.gif" class="ewebeditor__script" _ewebeditor_fake_tag="script" _ewebeditor_fake_value="%3Cscript%20language%3D%22javascript%22%3E%20%0D%0Afunction%20check2()%20%0D%0A%7B%20%0D%0Avar%20str2%3Ddocument.getElementById(%22input2%22).value%20%0D%0Avar%20s2%3D%22%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%22%20%0D%0Avar%20re%20%3D%20eval(%22%2F%5E%22%2Bs2%2B%22%24%2Fig%22)%20%0D%0Aalert(re.test(str2))%20%0D%0A%7D%20%0D%0A%3C%2Fscript%3E"> 
<input id="input2" value="正则表达式"> 
<input type="button" value="确定" onclick="check2()">

　　 [Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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