PHP | var keyword
The var keyword in PHP is used to declare a property or variable of class which is public by default. The var keyword is same… Read More »
Category Archives: Web technologies Questions
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 »
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 »
