The simplest way to merge JSON arrays usning JQuery is to use the concat function. var json1 = [{id: 1, name: “one”}]; var json2 = [{id: 2, name: “two”}, {id: 3, name: “three”}]; var finalObj = json1.concat(json2); Here finalObj will contain an array of 3 objects: [{id: 1, name: “one”},{id: 2, name: “two”}, {id: 3, […]
JQuery Check if Element Exists using this simple piece of code. To check this in the current page, we need to check the length of the element returned by the JQuery selector, if it returns you something then the element must exists otherwise no. if( $(‘#EleSelector’).length ) { // use this if you are using […]
For a check box with the id “checkbox”, here is how to check if its checked: $(‘#checkbox’).is(‘:checked’); // Returns True if checked else False
JavaScript has two sets of equality operators: === and ==. They mostly work exactly the same ie, if the operands are of the same type and have the same value, then === produces true & so does ==. But if the operands are of different types, then === produces false & == says true. The […]
Update (2026): This guide has been updated with modern ES6+ methods and troubleshooting FAQs to ensure it works with the latest web standards and frameworks. Iterating through dropdown (select) options is a fundamental task in web development. Whether you are validating a form, dynamically filtering data, or syncing UI states, knowing how to efficiently loop […]