How to convert a function definition as string to code in JavaScript

 

Just a snippet for converting a function as string to code:

image

 

Code

<!doctype html>
<html>
<head>
    <meta charset=”utf-8″ />
    <meta http-equiv=”x-ua-compatible” content=”ie=edge”>
    <title>Research</title>
    <meta name=”description” content=”A page to quickly spike some code or styling.”>
    <meta name=”viewport” content=”width=device-width, initial-scale=1″>
    <link rel=”icon” href=”data:;base64,iVBORw0KGgo=”>   
    <style>
       
    </style>
</head>
<body>
    <script>
        // Define a function as a string.
        // Don’t forget the “(” and the “)” arround the function.
        // See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
        var functionAsString = “(function(a, b){ return a + b; })”;

        // Convert a string containing a function definition to a real function.
        var fn = eval(functionAsString);

        // Execute the created function.
        var result = fn(1, 2);

        // Log result is: 3
        console.log(result);
    </script>
</body>
</html>

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