Question

因此,我有一个简单的搜寻形式,并提交纽特。我想做的是,如果是的话,那么我就希望将输入(频率)发送到倒转.php。否则,我会派去搜寻。 php。

<script type="text/javascript" language="JavaScript">
function chgact()
   {
if(document.myform.que.indexOf(=) == true) {
   document.myform.action =  /vert.php ;
   }
return true;
}
</script>
    <h1>Keyword search</h1>
    <form name="myform" method="post" action="/search.php"  onSubmit="return chgact()">
      Keywords: <br/>
      <input type="text" name="que" id="que" / >
      <p/>
      Items to display: <br/>
      <select name="i">
        <option value="10">10</option>
        <option value="25">25</option>
        <option value="50">50</option>
      </select>
      <p/>
      <input type="submit" name="submit" value="Search"/>
    </form>

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Answer 1

更改第4行至<代码>if(文件.myform.que. Value.indexOf(= )! 页: 1

You need to get the value of que, you need to enquote the equals sign (you re searching for the character = ), and the indexOf function returns either -1 if not found or the position of the first occurrence, which is an integer. It does not return a boolean value.

增订的法典如下:

<script type="text/javascript" language="JavaScript">
function chgact()
   {
if(document.myform.que.value.indexOf( = ) != -1) {
   document.myform.action =  /vert.php ;
   }
return true;
}
</script>
    <h1>Keyword search</h1>
    <form name="myform" method="post" action="/search.php"  onSubmit="return chgact()">
      Keywords: <br/>
      <input type="text" name="que" id="que" / >
      <p/>
      Items to display: <br/>
      <select name="i">
        <option value="10">10</option>
        <option value="25">25</option>
        <option value="50">50</option>
      </select>
      <p/>
      <input type="submit" name="submit" value="Search"/>
    </form>

Answer 2

I would suggest you perform this action with PHP. If your site visitor has JavaScript turned off, they won t get the benefit of your logic. I suggest you look at strpbrk() function to detect the "=" char.

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