How to wait for a promise to finish before returning the variable of a function?
Here a promise is a returned object from an asynchronous function, to that callback methods can be added based on the previous function’s result. It… Read More »
Category Archives: Quizzes
How to choose a Technology Stack for Web Application Development ?
The world has changed to a mobile-first era but even today, none of the applications could emerge as effective as the web-based apps. Surfacing on… Read More »
How to compute union of JavaScript arrays ?
Given two arrays containing array elements and the task is to compute the union of both arrays with the help of JavaScript. There are two… Read More »
How to see the extensions loaded by PHP ?
To see all the extensions loaded by PHP, firstly we must be sure that PHP is successfully installed in our system. After that, we can… Read More »
What does javascript:void(0) mean?
You might have occasionally came across “javascript:void(0)” in an HTML Document. It is often used when inserting an expression in a web page might produce… Read More »
How to format a phone number in Human-Readable using JavaScript ?
Give a phone number and the task is to format a phone number in such a way that it becomes easy to understand for humans.… Read More »
When to use self over $this in PHP ?
The self and this are two different operators which are used to represent current class and current object respectively. self is used to access static… Read More »
How to generate a drop down list of timezone using PHP ?
The timezone_identifiers_list() function is used to generate a dropdown list of timezone with PHP. This function is used to return an indexed array containing all… Read More »
How to convert a pixel value to a number value using JavaScript ?
The task is to convert the string value containing ‘px’ to the Integer Value with the help of JavaScript. Here, Few approaches are discussed. Approach… Read More »
How to validate an input is alphanumeric or not using JavaScript ?
Given an input element and the task is to check whether the input element is alphanumeric or not. There are two methods to solve this… Read More »
How to hide elements in responsive layout using CSS ?
CSS can be used to hide or display elements of the page. This can be used in a responsive website to show certain elements that… Read More »
How to remove CSS style of <style> tag using JavaScript/jQuery ?
Given an HTML document containing inline and internal CSS and the task is to remove the style of <style> tag. The internal or embedded CSS… Read More »
How to find the index of all occurrence of elements in an array using JavaScript ?
Given an array containing array elements and the task is to find all occurrence of an element from the array. We are going to do… Read More »
How to remove all inline styles using JavaScript/jQuery ?
Given an HTML document containing inline and internal CSS and the task is to remove the inline CSS style from a particular element with the… Read More »
How to read CSS rule values with JavaScript?
CSS rules can be read and manipulated using DOM (Document Object Model). To read all the Embedded CSS rules using JavaScript we can use the… Read More »
