Found 6710 Articles for Javascript

How can I format numbers as dollars currency string in JavaScript?

Shubham Vora
Updated on 12-Jul-2022 12:35:55

16K+ Views

This tutorial teaches us to format numbers as a dollar currency string in JavaScript. Now, the question arises that why we need to format the numbers as a dollar currency string? Well, the answer is here. Users can think about the scenario where they are developing an eCommerce website or application and must show product prices to the customers. What if they render product prices like 2500 and $2500? The second one looks better as ‘$’ represents the USD currency and is the standardized way to show off the USD currency. Also, second approach is more understandable.Below, we have given ... Read More

What is the JavaScript version of sleep()?

Alankritha Ammu
Updated on 07-Jan-2020 09:35:37

401 Views

The JavaScript version of sleep() is “await”. The await feature pauses the current aync function.ExampleYou can try to run the following code to implement sleep in JavaScriptLive Demo                    function setSleep(ms) {             return new Promise(resolve => setTimeout(resolve, ms));          }          async function Display() {             document.write('Wait for 5 seconds!');             await setSleep(5000);             document.write('After 5 seconds!');          }          Display();          

Why do we use a plus sign in front of function name in JavaScript?

Anjana
Updated on 12-Jun-2020 08:26:41

304 Views

The +function() {} notation is primarily used to force the parser to treat whatever follows the + as an expression. This is used for functions that are invoked immediately, for example,+function() { alert("Demo!"); }();However, + before a function is one of the symbols. You can add other options also like !, -, ~, also. Parentheses can also be used as shown below −(function() { alert("Demo!"); })();You can also use it like this −(function() { alert("Demo!"); }());

What is the difference between getter and setter in JavaScript?

Akshaya Akki
Updated on 16-Jun-2020 08:15:05

970 Views

GetterWhen a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.SetterWhen a property is set, it implicitly calls a function and the value is passed as an argument. With that, the return value is set to the property itself. The set keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.ExampleHere’s an example showing how to implement both getter and setterLive Demo                   ... Read More

How to delete a setter using the delete operator in JavaScript?

Manikanth Mani
Updated on 16-Jun-2020 08:12:18

241 Views

To delete a setter using the delete operator, use the delete keyword. Here’s how you can delete −delete obj.nameExampleYou can try to run the following code to learn how to delete a setterLive Demo                    var department = {             deptName: "Marketing",             deptZone: "North",             deptID: 101,             get details() {                return "Department Details" + "Name: " + this.deptName + " Zone: " ... Read More

How to delete a getter using the delete operator in JavaScript?

Prince Varshney
Updated on 06-Dec-2022 09:30:06

1K+ Views

In this tutorial, we are going to learn how we can delete a getter function using the delete operator in JavaScript. Getter functions are used to get the property of an object and bind the property with the getter function i.e., whenever the property is called the getter function will also be called with it. You can only have one getter or setter per name on an object as we cannot create more than two getters using the same name in JavaScript. To delete a getter function in JavaScript we use the delete operator which uses the keyword “delete”. Syntax ... Read More

How to define getter and setter functions in JavaScript?

Ayyan
Updated on 16-Jun-2020 08:11:42

308 Views

GetterWhen a property is accessed, the value gets through calling a function implicitly. The get keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.SetterWhen a property is set, it implicitly call a function and the value is passed as an argument. With that the return value is set to the property itself. The set keyword is used in JavaScript. An identifier, either a number or a string is allowed for set.ExampleHere’s an example showing how to implement both getter and setterLive Demo                   ... Read More

How to set a default parameter value for a JavaScript function?

Prabhdeep Singh
Updated on 07-Nov-2022 08:29:45

496 Views

In this tutorial, we are going to learn to set a default parameter value for a JavaScript function. JavaScript is an object-oriented programming language that provides us the facility to perform both functional and class-oriented programming which gives us the facility to manage code easily and can re-use the code as well. In functional programming, the programmer creates a function that may take some parameters and may return some value after performing a number of steps it was supposed to do. The value of parameters for the function can be a string, number, object, etc. and we can also set ... Read More

What is the use of return statement inside a function in JavaScript?

Alankritha Ammu
Updated on 07-Jan-2020 08:51:24

308 Views

The “return” statement in JavaScript mentions a value, which you like to return. Inside a function, the value is returned to the function caller.ExampleYou can try to run the following code to implement return statement inside a functionLive Demo                    function multiply(num1, num2) {             return num1 * num2;          }          var result = multiply(5, 10);          document.write("Multiplication: "+result);          

What are the latest operators added to JavaScript?

Ayyan
Updated on 16-Jun-2020 08:10:14

113 Views

The latest operators added to JavaScript are spread operator and rest.Rest operatorWith rest parameter, you can represent number of arguments as an array. ES6 brought rest parameter to ease the work of developers. For arguments objects, rest parameters are indicated by three dots … and preceds a parameter.ExampleLet’s see the following code snippet to define rest parameter                    function addition(…numbers) {             var res = 0;             numbers.forEach(function (number) {                res += number;   ... Read More

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