What is the difference between `null` and `undefined` in JavaScript?

Description : `null` is an assigned value representing no value, while `undefined` means a variable has been declared but not assigned.

Answer :

`null` is explicitly assigned to indicate 'no value,' while `undefined` means a variable has been declared but has not been assigned a value. They are different types (`null` is an object, `undefined` is undefined). 
let x; // undefined
let y = null; // null

`null` is explicitly assigned to indicate 'no value,' while `undefined` means a variable has been declared but has not been assigned a value. They are different types (`null` is an object, `undefined` is undefined). 
let x; // undefined
let y = null; // null

Category : Javascript

Created Date : 9/7/2024

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

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`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. 

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`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';
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const str = 'Click here';
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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. 

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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?

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`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';
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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';
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`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';
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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>'