javascript-proxying-example

javascript-proxying-example.js

var x = {
    doThis : function() { console.log('doThis'); },
    whatIsThat : function(i) { console.log('whatIsThis'); return 'that is ' + i; },
    name : 'I am x'
};

for (methodName in x) {
    var method = x[methodName]; 
    if (typeof method !== 'function') continue;
    x[methodName] = (function(method, methodName) {
        return function() {
            var before = new Date();
            var result = method.apply(x, arguments);
            var after = new Date();
            console.log('method ' + methodName + ' took ' + (after - before) + ' milliseconds');
            return result;
        }
    })(method, methodName);
}

x.doThis();
console.log(x.whatIsThat(2));