Using Array.prototype.findIndex() to find object

Question

I was looking at some examples of using findIndex(), but I think they gave static examples by setting the search value as static variable inside the function.

I want to find the index of an object in an array so I can call it later. So far how I did it is as follows:

https://jsfiddle.net/osbb5zgc/5/

var array1 = [{name: "Adam", id: 23},{name: "Badam", id: 55}];
var target = 55;

var res = array1.findIndex(function(element){
    return element.id === target;
});

// Returns 1

It correctly returns 1 as is the index of {name: "Badam", id: 55}, BUT is there a better way of passing that target-variable into the function? Or will this work in most cases?

You're no doubt about to update this question to state that the items in the array are actually objects - not simple numbers. That will make this question entirely opinion based - "What is the best way to...." is by definition opinion based (My best != next persons best). You will need to specify more on what it is about this approach which does not fit the bill. — Jamiec
– Jamiec, Commented Jan 8, 2018 at 12:46
For your specific example, I can't think why findIndex won't be a suitable approach or how it can be improved upon. Can you specify your reservations against findIndex? — gurvinder372
– gurvinder372, Commented Jan 8, 2018 at 12:55
@Jamiec: Fiddle is now updated. I realise I should have rephrased the question. I was just referring to previous examples using findIndex to find objects, but who had the 'target' variable inside as a static value. I want to be able to add that value outside the function. — JUlinder
– JUlinder, Commented Jan 8, 2018 at 13:15

gurvinder372 · Accepted Answer · 2018-01-08 12:40:44Z

1

If the values in search_array is scalar in nature, then simply use indexOf

search_array.indexOf(target)

Demo

var search_array = [5, 12, 8, 130, 44];
var target = 44;

console.log("Index of target is " + search_array.indexOf(target));

However, if the value is an array or object, then findIndex is right method to use.

answered Jan 8, 2018 at 12:40

gurvinder372

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3 Comments

JUlinder Over a year ago

Thanks for your answer, actually, in the extension of this is that I want to have objects in the array, perhaps I should had made the question so.

gurvinder372 Over a year ago

@JUlinder For objects, findIndex is more suitable and indexOf won't work.

JUlinder Over a year ago

Good comment, I think I'll modify the question to be more accurate for what you're saying

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