What is the `Array.prototype.findIndex` method in JavaScript?

Description : `findIndex` returns the index of the first element in the array that satisfies the provided testing function.

Answer :

`Array.prototype.findIndex` returns the index of the first element in the array that satisfies the provided testing function. If no elements satisfy the function, it returns `-1` 
 const arr = [1, 2, 3];
const index = arr.findIndex(num => num > 1);
console.log(index); // 1

`Array.prototype.findIndex` returns the index of the first element in the array that satisfies the provided testing function. If no elements satisfy the function, it returns `-1` 
 const arr = [1, 2, 3];
const index = arr.findIndex(num => num > 1);
console.log(index); // 1

Category : Javascript

Created Date : 9/6/2024

Show more answersWrite your answer

Related Questions

Total : 353Paid :276Free :77Page :4

What is the `String.prototype.anchor` method in JavaScript?

What is the `String.prototype.anchor` method in JavaScript?

More details

2024-09-06 last updatedFreeJavascript

`String.prototype.anchor` creates an HTML `<a>` element wrapping the string with a specified name attribute. This method is deprecated and should not be used in modern applications. 

const str = 'Click here';
const anchoredStr = str.anchor('top');
console.log(anchoredStr); // '<a name="top">Click here</a>'

`String.prototype.anchor` creates an HTML `<a>` element wrapping the string with a specified name attribute. This method is deprecated and should not be used in modern applications. 

const str = 'Click here';
const anchoredStr = str.anchor('top');
console.log(anchoredStr); // '<a name="top">Click here</a>'

`String.prototype.anchor` creates an HTML `<a>` element wrapping the string with a specified name attribute. This method is deprecated and should not be used in modern applications. 

const str = 'Click here';
const anchoredStr = str.anchor('top');
console.log(anchoredStr); // '<a name="top">Click here</a>'

`String.prototype.anchor` creates an HTML `<a>` element wrapping the string with a specified name attribute. This method is deprecated and should not be used in modern applications. 

const str = 'Click here';
const anchoredStr = str.anchor('top');
console.log(anchoredStr); // '<a name="top">Click here</a>'

What is the `String.prototype.small` method in JavaScript?

What is the `String.prototype.small` method in JavaScript?

More details

2024-09-06 last updatedFreeJavascript

`String.prototype.small` returns a string wrapped in HTML `<small>` tags. This method is deprecated and should not be used in modern applications. 

const str = 'hello';
const smallStr = str.small();
console.log(smallStr); // '<small>hello</small>'

`String.prototype.small` returns a string wrapped in HTML `<small>` tags. This method is deprecated and should not be used in modern applications. 

const str = 'hello';
const smallStr = str.small();
console.log(smallStr); // '<small>hello</small>'

`String.prototype.small` returns a string wrapped in HTML `<small>` tags. This method is deprecated and should not be used in modern applications. 

const str = 'hello';
const smallStr = str.small();
console.log(smallStr); // '<small>hello</small>'

`String.prototype.small` returns a string wrapped in HTML `<small>` tags. This method is deprecated and should not be used in modern applications. 

const str = 'hello';
const smallStr = str.small();
console.log(smallStr); // '<small>hello</small>'