To think of it, it is amazing of how long you can keeping going and call yourself a good Javascript engineer without knowing about the Event Loop and rightfully so. In fact heaps of Javascript engineers I know these days who are good at coding ReactJS, have no idea what the event loop ...
A callback function in JavaScript is a function that is passed as an argument to another function and is invoked after some kind of event.
JavaScript before executing your code parses it, and adds to its own memory every function and variable declarations it finds, and holds them in memory. This is called hoisting.We have some different behaviors for function declarations and function expressions....
jQuery( document ).ready( function ( e ) { // Open outbound links in a new window. jQuery(document.links) .filter(function() { return this.hostname != window.location.hostname; }) .attr('target', '_blank'); }); The Event Loop JavaScript relies on an event loop which listens fo...
Vue.js:A progressive JavaScript framework for building user interfaces. It is known for its simplicity and ease of integration with existing projects. jQuery:A fast, small, and feature-rich library. It simplifies HTML document traversing, event handling, and animating, making it popular among devel...
JavaScript (JS) is an object-based, dynamic scripting programming language. This programming language allows users to create complex interactive features on web pages. It is lightweight and cross-platform.
Node.js is an open-source JavaScript runtime environment that allows developers to execute JavaScript code for server-side scripting and scalable network applications.
When you load a web page in your browser, you are running your code (the HTML, CSS, and JavaScript) inside an execution environment (the browser tab). This is like a factory that takes in raw materials (the code) and outputs a product (the web page)....
What is?and Optional Properties? At the end of some non-required property names of the interface, add?This is an optional property, which is actually a literal meaning, a conditional property. Optional Property is just the property name, that is, the question mark after options inoptions?: ...
这个调用了webApi,会转到或者注册一个click事件,接着压入console.log('test3');那么webApi中的click事件什么时候执行呢,当用户去触发点击这个dom元素的时候,会激活这个函数,这个click不会马上压入stack中,也会需要进入callbackQueue中排队执行,当stack中事件执行完为空的时候,event loop会把click压入栈中,接着console...