Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Front End Technology Articles
Page 428 of 652
What is Multiplication Assignment Operator (*=) in JavaScript?
The multiplication assignment operator (*=) in JavaScript provides a shorthand way to multiply a variable by a value and assign the result back to the variable. Instead of writing a = a * b, you can simply use a *= b. Syntax operand1 *= operand2 // equivalent to: operand1 = operand1 * operand2 The multiplication assignment operator is a binary operator that multiplies the left operand by the right operand and stores the result in the left operand. Example 1: Basic Usage with Numbers Here's how the multiplication assignment operator works with numeric ...
Read MoreHow to delay a JavaScript function call using JavaScript?
In this tutorial, we are going to learn how can we delay a function in JavaScript. Whenever we want to call a function after a specified amount of time than we use the delay function in JavaScript. To provide delay in JavaScript function we use a global window object named as setTimeout(). This function allows us to provide a specific delay before executing a function. The setTimeout() method mainly requires two arguments: the function which we need to execute with some delay and the time (in milliseconds) for which we want to delay the function. Syntax ...
Read MoreHow to use associative array/hashing in JavaScript?
We use Object and Map classes to mimic the behavior of associative array/hashing in JavaScript. JavaScript doesn't provide an associative array built-in. The closest similar behavior we get is from the Map class in JavaScript. Let us look at them one by one. Object Class in JavaScript The object class allows us to create objects with name-value pairs. This is similar to hashing as the object knows which property is associated with what value. Syntax const obj = { name : "Abhishek", age : 22 } var name ...
Read MoreHow to encode a URL using JavaScript function?
As we know, a URL is a web address. What is URL encoding and why do we need to encode a URL? The process of turning a string into an accurate URL format is known as URL encoding. A valid URL format only uses "alpha | digit | safe | extra | escape" characters. Only a limited selection of the normal 128 ASCII characters is permitted in URLs. Reserved characters that are not part of this set must be encoded. URL encoding increases the reliability and security of URLs. Each character that needs to be URL-encoded is encoded ...
Read MoreHow to decode a URL using JavaScript function?
In this tutorial, we will learn how to decode a URL using JavaScript. URL is an abbreviation for Uniform Resource Locator. A URL is the address of a certain Web site. Each valid URL, in principle, links to a different resource. These resources include an HTML page, a CSS document, a picture, etc. URL encoding refers to replacing certain characters in a URL with one or more character triplets composed of the percent character "%" followed by two hexadecimal numbers. The triplet's two hexadecimal digits represent the numeric value of the replacement character. URL encoding's reverse process is ...
Read MoreHow to add a number of months to a date using JavaScript?
To add a number of months to a date in JavaScript, you can use the setMonth() method combined with getMonth(). This approach automatically handles year transitions and varying month lengths. Basic Syntax date.setMonth(date.getMonth() + numberOfMonths); Example: Adding Months to Current Date var currentDate = new Date(); var monthsToAdd = 3; document.write("Original Date: ...
Read MoreHow to parse JSON object in JavaScript?
JSON (JavaScript Object Notation) is a lightweight data format commonly used for data exchange. JavaScript provides the built-in JSON.parse() method to convert JSON strings into JavaScript objects. Syntax JSON.parse(text, reviver) Parameters text - The JSON string to parse reviver (optional) - A function that transforms the results Basic JSON Parsing Example // Simple JSON string let jsonString = '{"name": "John", "age": 30, "city": "New ...
Read MoreHow can I pass a parameter to a setTimeout() callback?
To pass a parameter to setTimeout() callback, you can use additional arguments after the delay parameter or use anonymous functions with closures. Syntax setTimeout(functionName, milliseconds, arg1, arg2, arg3...) The following are the parameters: functionName − The function to be executed. milliseconds − The delay in milliseconds. arg1, arg2, arg3 − Arguments passed to the function. Method 1: Using Additional Arguments Pass parameters directly as additional arguments to setTimeout(): Submit ...
Read MoreWhat is the syntax for leading bang! in JavaScript function?
The leading bang (!) in JavaScript is used to immediately invoke anonymous functions. It converts the function declaration into a function expression, allowing immediate execution. Why Use Leading Bang? JavaScript requires function expressions (not declarations) to be immediately invoked. The ! operator forces the parser to treat the function as an expression. Syntax !function() { // code here }(); Example: Basic Usage !function() { console.log("Immediately invoked with bang!"); }(); Immediately invoked with bang! Alternative Operators Besides !, ...
Read MoreHow to determine if an argument is sent to the JavaScript function?
To determine if an argument is sent to a JavaScript function, you can use several approaches including default parameters, checking for undefined, or using the arguments object. Using Default Parameters Default parameters provide fallback values when arguments are not passed or are undefined: function display(arg1 = 'Tutorials', arg2 = 'Learning') { document.write(arg1 + ' ' + arg2 + ""); } ...
Read More