Yarn is a package manager for JavaScript environments. Learn how to install the Yarn package manager on Ubuntu 22.04 here.
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Node.js is a cross-platform, open-source, back-end JavaScript runtime environment. Learn how to install node.js on AlmaLinux here.
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The best 5 free sources for learning JavaScript language include “JavaScript for Cats”, “Codecademy”, “MDN JavaScript”, “FreeCodeCamp”, and “Coursera”.
To convert array to object in JavaScript, use the Object.fromEntries() method, the Spread(…) operator, the Object.assign() method or the reduce() method.
To place CSS in JavaScript, you can create a link and set its attributes in JavaScript and append it to the heading or the div using CSS.
To append strings at the end in JavaScript, use the join() method, the + operator, the += operator or the concat() Method.
To change text color, use the style.color property in combination with the getElementById() method or the querySelector() method.
To assign value to the textbox using JavaScript, use the JavaScript predefined method called setAttribute() method or the value property of the text element.
To add option to a select tag from an input text using JavaScript, use the JavaScript built-in methods, including add() method or appendChild() method.
To add row in table, use insertRow() method or create a new element using JavaScript built-in methods including appendChild() method and createElement() method.
To check if a number is a perfect square in JavaScript, you can use the Math.sqrt() method, the Math.floor(), and the Math.ceil() methods.
To check and uncheck all checkboxes using JavaScript, use the document.getElementsByName() method with Checkboxes or with Buttons.
WonderCMS is a content management system written in PHP that uses javascript, jQuery, and CSS. Learn how to install WonderCMS on Ubuntu 22.04 here.
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To get and set input text value in JavaScript, use the getElementById(), getElementByClassName() Methods or the querySelector() and addEventListener() Methods.
To detect tab key in JavaScript, you can apply the addEventListener() with the document.querySelector() Method or the getElementbyId() Method.
To divide two numbers, use Division (/) operator or parseInt() method. If dividend and divisor are even, the quotient will be int; otherwise, a decimal number.
To create custom alert box in JavaScript, you can use the Swal.fire() method offered by the SweetAlert library or the JQuery library.
To create a button in JavaScript, apply the createElement() and appendChild() methods or specify button as the value of the input type attribute.
To format the phone number, “RegEx” or “substr()” method can be utilized. Mentioned methods are efficient to format phone number with or without country code.
To compare two strings, use the localeCompare() method, strict equality operator, RegEx with test() method, or includes() method.