Handling Multiple JavaScript Promises Even if Some Fail

As explained in detail at http://adampaxton.com/handling-multiple-javascript-promises-even-if-some-fail/, Following is a working example to address such situation:

unction apiRequest(url) {
    return new Promise(function (resolve, reject) {

        //our fake api simply returns the string passed as the 'url'
        if (url) {
            resolve(url);
        } else {
            //if no url is passed to the function, it will fail
            reject('apiRequest failed!');
        }
    })
    .catch(function(err){
        //return error;
        return err;
    });
}

var p1 = apiRequest('urlOne');

//this one will fail
var p2 = apiRequest();

var p3 = apiRequest('urlThree');

Promise.all([p1, p2, p3])
.then(function(res){
    console.log('Promise.all', res);
})
.catch(function(err){
    console.error('err', err);
});

//Promise.all [ 'urlOne', 'apiRequest failed!', 'urlThree' ]