JavaScript Array By Index

Question

Sure it's a stupid mistake but can't see what I'm doing wrong here but when I test in my fiddle I can't get a result, could someone point out where I'm going wrong please?

In the code below and in the fiddle I'm trying to return the value for array id: 15.

https://jsfiddle.net/wc71ra6r/3/

Code

function findValueById(myA, fVal) {
 for(var i = 0; i < myA.length; i++){
 if(myA[i].id === fVal) {
 return myA[i].value;
 }
 }
}
var myArray = [{id: 10, value: 100},
 {id: 15, value: 300},
 {id: 20, value: 200];
alert(findValueById(myArray, 15)); // 300

• LeDoc: You need to close the bracket for the last object in the array.
• Tushar: Add } to the last element in array. jsfiddle.net/tusharj/wc71ra6r/4

Answer 1

You didn't close your array deceleration right: Replace your array declaration with this:

var myArray = [{id: 10, value: 100},
 {id: 15, value: 300},
 {id: 20, value: 200}];

Answer 2

var myArray = [{id: 10, value: 100},
 {id: 15, value: 300},
 {id: 20, value: 200}];

Answer 3

Missing } in array

var myArray = [{id: 10, value: 100},
 {id: 15, value: 300},
 {id: 20, value: 200}];