Javascript array find alternative

Question

I'm looking for an alternative for the find() method of an array. I'm using it on Android Browser and Array.prototype.find() doesn't work there. Definition Array Support

var test= this.arrayOfValues.find(function (value) {
            return (value.name === device.value)
});

please have a look here: developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — Nina Scholz
– Nina Scholz, Commented Jan 27, 2016 at 15:57

serv-inc · Accepted Answer · 2016-01-28 08:25:21Z

2

If you do not care so much about programming your own, and if indexOf is somehow not usable, have a look at Underscore.js#find. As an alternative, as @NinaScholz recommended in the comments, use the Polyfill from mozilla.org:

if (!Array.prototype.find) {
  Array.prototype.find = function(predicate) {
    if (this === null) {
      throw new TypeError('Array.prototype.find called on null or undefined');
    }
    if (typeof predicate !== 'function') {
      throw new TypeError('predicate must be a function');
    }
    var list = Object(this);
    var length = list.length >>> 0;
    var thisArg = arguments[1];
    var value;

    for (var i = 0; i < length; i++) {
      value = list[i];
      if (predicate.call(thisArg, value, i, list)) {
        return value;
      }
    }
    return undefined;
  };
}

edited Jan 28, 2016 at 8:25

answered Jan 27, 2016 at 15:50

serv-inc

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1 Comment

Erdem Güngör Over a year ago

Using Polyfill from mozilla work's very well. Thanks.

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