waitFor.js

waitFor.js

function waitFor(condition, callback) {
    if (window.angular != undefined) {
        /* do something*/
        callback();
    } else {
        window.setTimeout(function () {
            waitFor(condition, callback)
        }, 1000);
    }
}

console.log('Waiting for angular');
waitFor(function () {
    return window.angular != undefined;
}, function (){
    console.log('Angular loaded!')
    // do something when angular is loaded
});