F9e37fce4b4be49fbb403ee0f40ca379

Talk me out of using this...

Function.prototype.waitUntil = function (condition, interval) {
    interval = interval || 100;
    
    var fn = this,
        shell = function () {
            var timer = setInterval(
                function () {
                    var check;
                    
                    try { check = !!(condition()); } catch (e) { check = false; }
                    
                    if (check) {
                        clearInterval(timer);
                        delete timer;
                        fn();
                    }
                },
                interval
            );
        };
    
    return shell;
};

(function () { window.status = 'I waited, and waited, and waited...'; }).waitUntil(function () { return !!(something === true); })();

Refactorings

No refactoring yet !

F1e3ab214a976a39cfd713bc93deb10f

tjholowaychuk

June 1, 2010, June 01, 2010 15:32, permalink

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here is a nodejs example

/**
 * Module dependencies.
 */

var sys = require('sys');

Function.prototype.waitUntil = function(fn, interval) {
    var id = setInterval(function(self){
        if (fn()) {
            clearInterval(id);
            self();
        }
    }, interval, this);
};

var done;

(function(){
    sys.puts('... complete!');
}).waitUntil(function(){
    sys.puts('... incomplete');
    return done;
}, 200);

setTimeout(function(){
    done = true;
}, 1000);

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