The JavaScript string is an object that represents a sequence of characters. There are 2 ways to create strings in JavaScript By string literal By string object (using new keyword) 1) By string literal The string literal is created using double quotes. The syntax of creating a string using string literal is given below Var …
replace() method returns a new string with the specified string replaced. Let’s see an example. Syntax of replace function is given below. Syntax : string.replace(pattern, replacement) const message = "abc xyz"; // replace the first b with c let result = message.replace(‘b’, ‘c’); console.log(result); //Output: acc xyz We can replace also the first occurrence in …
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We can use Math.random , math.floor functions to generate random array items. Length property returns the number of elements in the array. Math.floor() function rounds down a number to the next smallest integer. Math.random() function returns a random number between 0 and 1. Let’s see the below example const array=[1,2,3,4,5]; const random1 = array[(Math.floor(Math.random() * …
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A stack is a data structure that holds a list of elements. A stack works based on the LIFO principle i.e., Last In, First out, meaning that the most recently added element is the first one to remove. Operations on Stack There are the following operations that are performed on a stack: push(): The push() …
The JavaScript array sort() method is used to arrange the array elements in some order. By default, the sort() method follows the ascending order. By default, the sort() method sorts the array elements in ascending order with the smallest value first and the largest value last. Example: Let’s see a simple example to sort the …
includes() Method In JavaScript, includes() method determines whether a string contains the given characters within it or not. This method returns true if the string contains the characters, otherwise, it returns false. const array = [50, 22, 31, 20, 9]; const check = array.includes(20); const check1 = array.includes(33); console.log(check) console.log(check1) //Output: true false find() Method …
Iterators are methods that are called on arrays to manipulate elements and return some values.The most frequently used iteration methods are forEach(), filter(), map(), reduce(),every(), some(), find() , findindex(). forEach() Method The forEach() method is used to loop over elements of an array, it takes in a callback function as an argument which, in turn, …
Javascript Array is a single variable that is used to store different elements. It is often used when we want to store a list of elements and access them by a single variable. An array is an object that can store multiple values at once. Creating JavaScript arrays You can create an array using two …
The Beginner’s Guide to JavaScript Array with Examples Read More »
Shorthand Properties Object methods in ES5 require the function statement. // ES5 code var str = { sum: function(a, b) { return a + b; }, mult: function(a, b) { return a * b; } }; console.log( str.sum(5, 5) ); //Output : 10 console.log( str.mult(10, 15) ); //Output : 150 While in ES6, it uses …
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Objects in JavaScript are collections of key/value pairs. The values can consist of properties and methods and may contain all other JavaScript data types, such as strings, numbers, and Booleans. toString() The toString() method takes no arguments; it returns a string that somehow represents the value of the object on which it is invoked. JavaScript …
