Sep 8, 2011 · The findIndex() method returns the index of the first element in the array that satisfies the provided testing function. Otherwise -1 is returned. var fooArray = [5, 10, 15, 20, …

Nov 23, 2011 · I have an array and simply want to get the element at index 1. var myValues = new Array(); var valueAtIndex1 = myValues.getValue(1); // (something like this) How can I get …

Jun 29, 2012 · There's now a great way of doing this called findIndex which takes a function that return true/false based on whether the array element matches (as always, check for browser …

Dec 27, 2013 · The .indexOf() method has an optional second parameter that specifies the index to start searching from, so you can call it in a loop to find all instances of a particular value:

Here, there is no need to store the split elements in an array, and then get to the last element. If getting last element is the only objective, this should be used. Note: This changes the original …

Jul 14, 2016 · Other arguments of Array.prototype.map(): The third argument of the callback function exposes the array on which map was called upon; The second argument of …

Jul 11, 2013 · To find the index of the greatest value in an array, copy the original array into the new array and then sort the original array in decreasing order to get the output [22, 21, 7, 0]; …

Apr 14, 2013 · while you can just loop through various ways to get the index, find Index is the best solution, even adopted in ES6 into native array methods – Kelly Milligan Commented Sep 3, …

THIS is better than the answers above as it will break the loop upon first find rather than iterate the entire array and make a new array, ONLY to then perform the excise that is performed in …

Dec 29, 2011 · In the performance benchmarks I tried it with both the target being in the middle (index 500) and very end (index 999) of a 1000 object array, and even if I put the target in as …