pentaho javascript

The subconscious will not use the object-oriented idea to write JavaScript code, nor will it have a deep understanding of prototype, closures, and other concepts. This leads to poor code writing.The most important thing to learn about JavaScript is to recognize that JavaScript is not a toy language. JavaScript is far m

Scopes are one of the most important concepts of JavaScript, and to learn JavaScript you need to understand how JavaScript scopes and scope chains work. Today's article provides a simple introduction to JavaScript scopes and scope chains, hoping to help you learn JavaScript

Summary of the 10 key habits of JavaScript developers, and summary of javascript With the continuous development of new technologies, JavaScript is no longer just a network language. Now we can see a lot of mobile phones that use JavaScript to build Web applications based on local browsers, and there are also a lot of

Basic javascript knowledge and basic javascript knowledge This article is suitable for beginners of javascript or those who have been learning the front-end for a while and are not clear about the js concept ~~. Objective This article is intended for students with weak javascript foundations to deepen their understandi

Summary of JavaScript performance optimization and javascript Performance Optimization With the continuous promotion of web technology, more and more applications are processing JavaScript on the client, making the performance of JavaScript in the browser the most important availability problem faced by developers. Thi

To realize the full potential of JavaScript, it is important to understand its nature, history and limitations.This section explains the origins of JavaScript and client-side scripting.Nombas and ScripteaseProbably in 1992, a company called Nombas developed an embedded scripting language called C-minus (C-minus-minus, or Cmm). The idea behind the Cmm is simple: A scripting language that is strong enough to

A. JavaScript syntax directory Grammar Operation Conditional statements Looping statements Function Object Two. Specific content2.1 Syntax　　JavaScript code can be executed through the html/xhtml document. There are two ways to do this, the first of which is to place the JavaScript code between the DOCTYPE HTML>HTMLLang= "en">Head

Translator JjfatDate: 2012-9-17 Source: gbin1.comWith the increasing density of front-end development, the use of Ajax and JSON more and more frequently, we certainly avoid in the foreground development of a large number of use of tags, often see the following examples:You have a JSON object, as follows:var data={email: ' [email protected], gender: ' Male '}Then you need to organize the JSON data into page content, as follows:var email, gender;email= ' The code execution function is very simple,

language, the scripting language does not need to compile, can be used directly, by the interpreter to be responsible for interpretation.2：JS History1) Netsape invented JavaScript. 2) JS's father Brendan Eich (Brandon Aichi)3) Why is it called JavaScript ?4) JS is not related to the Java language5) JS Standardized---ECMAScript3：JS Composition4：File Introduction 2. stored in HTML In the head of HT

This in JavaScript, when it comes to JavaScript, is all about how dexterous and important it is, but doesn't care about it, and it's really important when you get to know the JavaScript step-by-step. So, I spent about 2 weeks to check and read the books before, the full picture of this is shown below. One, this is what--based on the context of the call location;

Recently, the project encountered the problem of submitting a form with JavaScript, a few times before, but not comprehensive, this time summed up several ways to submit the form in JavaScript, and compared it, chose one of the most appropriate way for this project. I am currently working on a small system for creating users for the Sun Communication Suite, and we all know that we can access the server thr

With the rapid development of the Internet, the earth has become smaller, people can cross the boundaries of time and space to communicate in cooperation. But then there are some vandalism hackers, which makes it possible for program designers to think about hacking in their applications, so it's natural to think of protection. This tutorial will teach you how to use JavaScript for password protection. There are several ways to use

JavaScript is the most popular scripting language on the Internet. It can be used for HTML and web, and is widely used in servers, PCs, laptops, tablets, smartphones, and other devices. JavaScript is a scripting language JavaScript Introduction JavaScript is the most popular scripting language on the Internet. It can b

Understanding Javascript image pre-loading and javascript image loading Pre-loading images is a good way to improve user experience. When images are pre-loaded into the browser, visitors can smoothly surf your website and enjoy extremely fast loading. This is very advantageous for websites with a large proportion of image galleries and images. It ensures fast and seamless publishing of images, it can also h

There are actually many JavaScript debuggers. Of course, these are just debuggers, and there is no way to compare them with the popular JavaIDE. However, from the perspective of debugging, the functions of these debuggers are sufficient. In fact, what I need is not a JavaScript IDE, but a JavaScript refactoring tool. This allows me to quickly refactor

I. Introduction to JavaScriptA historical review of 1.1 JavaScript.JavaScript was born in 1995. At the time, its main purpose was to handle some of the input validation operations handled by the server side. Before JavaScript is available, the form data must be sent to the server side to determineIf a required entry is not filled in, enter an invalid value. Netscape Navigator wants to solve this problem through Ja