Question

How can I submit a function definition and its call from

<input type="text">

tag?

EDIT:
My friend have written a php script where he takes the value of tag and without calling strip_tags function prints on another page. Now I want to show an example with JavaScript (I believe it should be possible) that I can inject a JavaScript code into his website. That is my task.

Answer 1

If you want to invoke script from your textbox, try to use eval in javascript.

<script type="text/javascript">
    function Invoke()
    {
        var ctrl = document.getElementById('content')
        eval(ctrl.value);
    }
</script>

<input type="text" id="content" />
<input type="button" onclick="Invoke()" value="Invoke" />

Code: http://jsfiddle.net/AuPRM/