Javascript Tests

decorators.js

function decorator(fn) {

    function wrapper() {
        console.log('Before function.');            
        var ret = fn.apply(this, arguments);
        console.log('After function.');           
        return ret;
    }

    return wrapper;
}


function foo(msg) {
    console.log("[foo]", msg);
}


decorator(foo)('Hello there!');

identifiers

// These actually are valid!
// see http://mathiasbynens.be/notes/javascript-identifiers

var ಠ_ಠ = eval;


var Σ = function(arr) {
    return arr.reduce(function(previous, current) {
        return previous + current
    }, 0);
}

console.log( Σ([1,2,3]) ); // 6