Regex through array of objects

Question

I have an array that has around 1000 elements, for example:

var peoples = [
  { "name": "bob", "dinner": "pizza" },
  { "name": "john", "dinner": "sushi" },
  { "name": "larry", "dinner": "hummus" },
  { "name": "jacob", "dinner": "pizza" }
............];

I want to search the "dinner"s element of the array with a regex, so it doesn't has to be the exact type. For example, let's say the input is "piz"; it should then return all the matching elements as an array. In the example above, it should return:

var result = [{ "name": "bob", "dinner": "pizza" },
{ "name": "jacob", "dinner": "pizza" }]

I know how to search a string using the .match function in javascript, but I don't know how to use a similar function in an array. How can I do this?

You should know, this is not multidimensional array. This is array of objects. Only possible method is coding logic in a loop. Hope this helps. — Vinod Kumar
– Vinod Kumar, Commented Oct 26, 2015 at 14:10
Just for the clarity, it's "A string" not "A piece of string" :P (Unless you mean a part of a string, in which case I guess it's almost correct, if a little confusing and you'd want "A piece of a string") — DBS
– DBS, Commented Oct 26, 2015 at 14:14
.. and is it search is a "contains" pattern instead or a format pattern?.. If the answer is a contains pattern then do not use regex. And how about you trying on your first — Dalorzo
– Dalorzo, Commented Oct 26, 2015 at 14:18

Oleksandr T. · Accepted Answer · 2015-10-26 14:29:58Z

9

You can use .filter with dynamic RegExp, like this

var search = "piz";
var condition = new RegExp(search);

var peoples = [
  { "name": "bob", "dinner": "pizza" },
  { "name": "john", "dinner": "sushi" },
  { "name": "larry", "dinner": "hummus" },
  { "name": "jacob", "dinner": "pizza" }
];

var result = peoples.filter(function (el) {
  return condition.test(el.dinner);
});

console.log(result);

edited Oct 26, 2015 at 14:29

answered Oct 26, 2015 at 14:10

Oleksandr T.

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