How to find if an array element contains a specific value in JavaScript/jQuery?

Question

Is possible to check if there is at least an array element that contains a specific value, without using a for loop? Or I am using the most efficient way?

I am working with a large number of data (1000+).

Sample array:

var myarray = [
    {id: 0, content: "demo0", group: 1},
    {id: 1, content: "demo1", group: 2},
    {id: 2, content: "demo2", group: 2},
    {id: 2, content: "demo3", group: 4},
]

I want to check if it contain elements with "group == 2". My code:

var arrayLength = myarray.length;
var flag = false;
for (var i = 0; i < arrayLength; i++) {
    if (myarray[i]["group"] == 2) {
        flag = true;
        break;
    }
}
alert(flag);

Every implementation will use some form of for-loop. However you don't have to write the 'low level' loop manually. You can use Array.some, for example. Or something from lodash. — user2864740
– user2864740, Commented May 29, 2015 at 1:38

Bruno Calza · Accepted Answer · 2015-05-29 01:38:41Z

3

You can use some like

var flag = myarray.some(function(obj){
  return obj.group === 2;
});

console.log(flag); // true

answered May 29, 2015 at 1:38

Bruno Calza

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