Array Findindex Javascript Example

Example 1: javascript findindex

const array1 = [5, 12, 8, 130, 44]; const search = element => element > 13; console.log(array1.findIndex(search)); // expected output: 3  const array2 = [   { id: 1, dev: false },   { id: 2, dev: false },   { id: 3, dev: true } ]; const search = obj => obj.dev === true; console.log(array2.findIndex(search)); // expected output: 2

Example 2: findindex js

// 	findIndex(callback fn)    //	.... return index (when condition meets) //  .... return -1 (if condition not meets)  const array = [5, 12, 8, 130, 44];  /// it returns the index of number which satisfy the condition true const index = array.findIndex((item)=> item>10);   //1  /// now we can check what element at that index... console.log(array[index]); // array[1]

Example 3: .findIndex(

array.findIndex(call back function)   //index of ............  //first