The "=>" symbol is used in JavaScript to define arrow functions. An arrow function is a shorthand for writing anonymous functions (functions without a name) in JavaScript. Arrow functions provide a more concise syntax compared to regular function expressions and do not have their own "this", ...
Strict mode changes some previously-accepted mistakes into errors. JavaScript was designed to be easy for novice developers, and sometimes it gives operations which should be errors non-error semantics. Sometimes this fixes the immediate problem, but sometimes this creates worse problems in the future...
In JavaScript, null is a primitive value that represents the intentional absence of any object value. It's often used to indicate that a variable or property intentionally holds no value or that an object reference points to nothing. null is a distinct value from undefined and has its own ...
What does div class mean in HTML?What is a coding project in HTML, CSS, javascript?Do I need JavaScript?What does p mean in HTML?What does td mean in HTML?What does & NBSP mean in HTML?What does li mean in HTML?1. JavaScript is called client-side programming because it runs not o...
I just learned that x && (x = y) is not the same as x = x && y, although in both cases x will always have the same value! String.prototype.replaceAll() I like to use .replace() with a substring parameter whenever I can. It's clear what it does and saves me from having to...
JavaScript void is often used when, inserting an expression into a web page may produce an unwanted side-effect.By using JavaScript:Void(0), you can eliminate the unwanted side-effect, because it will return the undefined primative value....
"I" - Interface Segregation Principle. This principle says: clients should not be forced to depend upon interfaces that they do not use. What does it mean? This principle says about the interface, but as we know, we don't have interfaces in Javascript. But, in Javascript we have something...
There are two ways to use JavaScript in an HTML file. The first one involves embedding all the JavaScript code in the HTML code, while the second method makes use of a separate JavaScript file that’s called from within a Script element, i.e., enclosed by Script tags. JavaScript files ...
In this example, we have set javascript: void(0) to the href and added a double-click event to the anchor tag. Only when the user doubles clicks on the tag, does the alert trigger. Here page does not refresh because we have set javascript: void(0). We can not observe the color ch...
“Nothing” in programming is returned when there is no result to return. What does “javascript:void(0)” mean? What is the use of void 0? What does “javascript:void(0)” mean? The undefined value is returned when evaluating an expression with the void operator. Generally, this ...