CODEWITHSUNDEEP
javascript
Paul
Paul

Reputation: 1014

How to read the JavaScript source code in an html page

Is there a way that a JavaScript function can read the JavaScript source code of other functions in an html page, so that the function can do some checking job on the javascript source code of these other functions?

Maybe a walkabout is how to get the source code of all JavaScript functions in an HTML page.

Upvotes: 3

Views: 3336

Answers (2)

statenjason
statenjason

Reputation: 5180

If you want the entire script tag try the following:

<html>
<head><title>Testing</title></head>
<body>
This is body text.

<input type="button" onClick="javascript:readScript()" value="Read it!" />

<script type="text/javascript" id="myscript">
    function readScript(){
        var html = document.getElementById("myscript").innerHTML;
        alert(html);
    }
</script>
</body>
</html>

Upvotes: 3

nickf
nickf

Reputation: 546045

If you want to see the source of a function, you can use the toSource() function:

function x(a) {
    return a + 1;
}
console.log(x.toSource());
// "function x(a) {
//    return a + 1;
// }"

I'm not sure about how you'd read the source outside of a function, or even why you'd particularly want to do this.

Upvotes: 4

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