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To find the length of a string in an array in javascript, use array[0].length it will return length of your first string of array.

Today, I’m going to show you How do I find the length of a string in an array in javascript, as mentioned above, I’m going to create a sample array of string variable then I will use the array index method to get the first string and check their length.

Let’s start today’s tutorial on how do you find the length of a string in an array in javascript.

Javascript gets the first letter of the string

Here, we will do

  1. Create a sample array string variable with data.
  2. Use array index and length to get length of array string
  3. Get length of string from the array of object
// Create a sample array string variable with data.
let arr1 = ["infintbility", "aguidehub", "sortoutcode"];

// Use array index and length to get length of array string
console.log("First Array string: ", arr1[0].length)
console.log("Second Array string: ", arr1[1].length)
console.log("Third Array string: ", arr1[2].length)

// Get length of string from the array of object
let arr2 = [
    { name:"infintbility"},
    { name:"aguidehub" }, 
    { name: "sortoutcode" }
];
console.log("First Array object string: ", arr2[0].name.length)
console.log("Second Array object string: ", arr2[1].name.length)
console.log("Third Array object string: ", arr2[2].name.length)

Output

I hope it helps you, All the best 👍.