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    <p>You're going to have to use the <code>eval()</code> (<a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/eval" rel="noreferrer">doc</a>) function. A lot of people have a lot of feelings about this function. JSON is best for transporting data, not functions (see <a href="https://developer.mozilla.org/en/JSON" rel="noreferrer">JSON</a>). The functions ought to lay in the script on the page. Also there's a syntax error in your posted code (function is wrapped in single quotes ('), and so is console.log's first parameter). But...</p> <pre><code>json = "{\"run\":\"function() { console.log('running...'); }\"}"; //Fixed, thanks obj = JSON.parse(json); eval(obj.run); //Logs "running..." </code></pre> <hr> <p><strong>Update:</strong></p> <p>Oh, and I was mistaken. Eval doesn't seem to like anonymous functions. With the revised code, it will parse json into an object with a run property that is a <code>String</code>, with value <code>"function() { console.log('running...'); }"</code>. But when you <code>eval(obj.run);</code>, you will get a SyntaxError declaring an unexpected (. Presumably, this is the ( in function <strong>(</strong>).</p> <p>So, I can think of two ways of dealing with this:</p> <ol> <li>Remove the anonymous function in your actual JSON string (so, make your PHP forget about <code>function () {</code>), and eval it. This means it will be called as soon as you <code>eval</code> it.</li> <li><p>What I think you want, is to be able to evaluate it to an anonymous function, that will be called when you want. So, you could write a wrapper function (you would need to follow option 1 for this as well):</p> <pre><code>function returnEval(str) { return function () { eval(str); } } </code></pre> <p>This would allow you to call it. So:</p> <pre><code>obj = JSON.parse(json); obj.run = returnEval(obj.run); obj.run(); //Logs "running..." </code></pre></li> </ol> <p>Hope this helps!</p>
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    1. COthe second line gave me in Chrome: SyntaxError: Unexpected token ILLEGAL
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    2. CO@weng - Fixed it above. Hope I helped!
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