[removed] How can I get all the keys and values of an object that begin with a specific string?

Question

I am trying to get all the keys and values of an object that begin with imageIds.

My object appears as the following:

{
    title: \'fsd         


        

Answer 1

Some functional style awesomeness:

var data = {
    title: 'fsdfsd',
    titleZh: 'fsdfsd',
    body: 'fsdf',
    bodyZh: 'sdfsdf',
    imageIds: '/uploads/tmp/image-3.png',
    imageIdsZh: '' 
};

var z = Object.keys(data).filter(function(k) {
    return k.indexOf('imageIds') == 0;
}).reduce(function(newData, k) {
    newData[k] = data[k];
    return newData;
}, {});

console.log(z);

Demo: http://jsfiddle.net/ngX4m/

Some minor explanation:

1. We use Array.prototype.filter() function to filter out the keys that start with `imageIds2
2. We use Array.prototype.reduce() to convert an array of filtered keys into an object of key-value pairs. For that we use the initial value of {} (an empty object), fill it and return from every execution step.

UPD:

A fair update from @GitaarLAB:

Object.keys is ES5, but returns an objects own properties (so no need for obj.hasOwnProperty(key))