eval vs. <script>

Benchmark created by Devon Govett on November 6, 2011

Setup

var JS = "function fibonacci(n) { \
        if (n < 2) { \
            return 1; \
        } else { \
            return fibonacci(n-2) + fibonacci(n-1); \
        } \
    }";
    
    function fibonacci(n) {
        if (n < 2) {
            return 1;
        } else {
            return fibonacci(n-2) + fibonacci(n-1);
        }
    }
    
    eval(JS.replace(/fibonacci/g, "fibonacciEval"));
    
    var fibonacciFn1 = Function('n','\
        if (n < 2) {\
            return 1;\
        } else {\
            var fibonacciFn1 = arguments.callee;\
            return fibonacciFn1(n-2) + fibonacciFn1(n-1);\
        }\
    ');
    
    var fibonacciFn2 = Function(JS.replace(/fibonacci/g, "fibonacciFn2") + 'return fibonacciFn2')();
    
    var head = document.getElementsByTagName('head')[0];
    var el = document.createElement("script");
    el.innerHTML = JS.replace(/fibonacci/g, "fibonacciScript");
    head.appendChild(el);

Teardown

    head.removeChild(el);
  

Test runner

fibonacciEval(20);

fibonacciScript(20);

fibonacciFn1(20);

fibonacciFn2(20);

fibonacci(20);

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published by Devon Govett on November 6, 2011
• Revision 4: published by John-David Dalton on November 6, 2011
• Revision 5: published by Michael Ficarra on November 7, 2011
• Revision 6: published by John-David Dalton on November 7, 2011