javascript | Object grouping

Question

I have an object. It looks like below:

[
  {
    \"name\":\"Display\",
    \"group\":\"Technical detals\",
    \"id\":\"60\",
    \"value\":\"4\"
  },
  {
           


        

Answer 1

Try with something like this:

function groupBy(collection, property) {
    var i = 0, val, index,
        values = [], result = [];
    for (; i < collection.length; i++) {
        val = collection[i][property];
        index = values.indexOf(val);
        if (index > -1)
            result[index].push(collection[i]);
        else {
            values.push(val);
            result.push([collection[i]]);
        }
    }
    return result;
}

var obj = groupBy(list, "group");

Keep in mind that Array.prototype.indexOf isn't defined in IE8 and older, but there are common polyfills for that.