drj14664 2014-02-12 17:33
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Javascript数组如何为数组中的每一行执行一个函数

okay so here's my current script 

<html>
<head>


    <script type="text/javascript">
        function textareaToArray(t){
        return t.value.split(/[
]+/);
        }
        function showArray(msg){
        document.getElementById("message").innerHTML = msg.join("&#013;");
        }
    </script>


    </head>
        <title>
        Welcome To ....
        </title>
<body>
        <center>
        <h1> WELCOME TO .... </h1></center>

    </br>
    </br>
    </br>

<center>

        <form>
        <textarea rows="10" cols="60" name="alpha"></textarea>
        <br>
        <input type="button"
        value="show array"
        onclick="showArray(textareaToArray(this.form.alpha ))">
        </form>
</center>
    </br>
<center>
        <textarea id="message" rows="6" cols="60" name="message"></textarea>
</center>
</body>
</html>

as you can see the javascript function basically just outputs the array into the second text area.

how can I invoke a function for each line in the array

e.g.

a function to use line in array post to php script as post data then echo the result back after this it does the same for the next line can any one help me on how I would post each line to a php script and echo the response back into the text area

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2条回答 默认 最新

  • doumor942473 2014-02-12 18:07
    关注

    I redid your entire example, also fixed some other small errors in your html. 

    <html><head><title>Welcome To ....</title>
    <script type="text/javascript">
        function textareaToArray(t){
            return t.value.split(/[
]+/);
        }
        function showArray(msg){
            for(i = 0; i < msg.length; i++) {
                // something per item
                alert(msg[i]);
            }
            // the old code
            document.getElementById("message").innerHTML = msg.join("&#013;");
        }
    </script>
</head>
<body>
    <h1> WELCOME TO .... </h1>
    <form>
    <textarea rows="10" cols="60" name="alpha"></textarea>
    <br>
    <input type="button" value="show array" onclick="showArray(textareaToArray(this.form.alpha ))">
    </form>
    <br>
    <textarea id="message" rows="6" cols="60" name="message"></textarea>
</body></html>

    Where the "alert" happens is where you could add code for each item in the array. Now for the warning, there is no input checking.. this code is brutally insecure and if you are allowing to pass things from a textarea, this is definitely a vector for XSS attacks.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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