javascript + SQL Write SQL Client tool Tabris

Wishing you 2018 Happy New Year, a creative script was discovered shortly beforeJtsql (written in Java)The Open source address is:Https:// Features:*. combination of JS, SQL, template concept;*. Keep the syntax

Use of assignment operators in JavaScript

The assignment operations in JavaScript can be divided into simple assignment operations and compound assignment operations. The simple assignment operation is to save the value of the expression on the right of the assignment operator (=) to the

JavaScript Document Object Model

Dom:document Object Model---document objects  The DOM is a BOM, and when the page is loaded, the browser creates a Document object model of the pageWith the precompiled object model, JS gets enough ability to create dynamic HTML.-JS can change all

JavaScript error message Capture

/** * @param {string} errormessage error message * @param {string} Scripturi Error file * @param {Long} linenu Mber the line number of the error code * @param {Long} columnnumber the column number of the error code * @param {Object} errorobj

Object-oriented javascript---dynamic type language

Object-oriented javascript---Dynamic type language dynamic type language and interface-oriented programmingJavaScript does not provide class inheritance in the traditional object-oriented language, but instead implements the inheritance between

JavaScript for the front-end base

JavaScript Overview of JavaScript history 1992 Nombas developed the embedded scripting language for C-minus-minus (c--) (originally bundled in Cenvi software). Rename it scriptease. (The language that the client executes) Netscape

JavaScript shorthand techniques reproduced continuous handling, aspects of their own view

Tips on some JavaScript, reproduced from HTTPS://WWW.GEEKJC.COM/POST/5A0A8C9A592E38541F7703C8.The 1IF statement can be abbreviated with a three-mesh operation:const x = 20;if (x > 10) {} else {Answer = ' less than 10 ';}Const ANSWER = x > 10? '

Scope and scope chain in JavaScript (learn to write) [watch others ' blogs with pure hand knocking]

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

JavaScript function Declaration Promotion

First, there are two ways to create functions in JavaScript, function declarations, function expressions, and so on.1, function declaration.function Boo () { console.log (123);} Boo ()2, function expression.var function () { console.log

JavaScript Performance Optimization tips sharing

JavaScript, as the most common literal-translation scripting language, has been widely used in WEB application development. In order to improve the performance of Web applications, it is a good choice to start with the JavaScript performance

Basic syntax, data types, and type conversions in JavaScript

JS Basic syntax is case-sensitive in JS. Identifiers: Refers to variables, arrays, functions and other names. Defining the identity is actually the process of naming the word. Hard requirements: means must be satisfied, otherwise

JavaScript various inheritance and pros and cons

Long time no blog, hehe, this month is the last one months of 2017, we should all start to write the year-end summary of it, hehe, Xiao Ying today to share the next JavaScript in several ways of inheritance and their advantages and disadvantages.1.

JavaScript Learning Notes (15)--Date,regexp of objects

In the study of Liaoche predecessors of the JavaScript tutorial, encountered some points needing attention, so as a study notes listed, remind yourself to notice!If you have the need, welcome to visit the previous blog

Three variable declaration methods for VAR let const in JavaScript

Three variable declaration methods for VAR let const in JavaScript1. var①var indicates that a variable is declared and can be initialized at the same time .② the scope of a variable declared with the Var statement is the context of the current

JavaScript first (three)--------functions, closures, immediate execution functions

Functionsometimes our code repeats a lot of times, programming is called coupling, but programming to pay attention to high cohesion, weak coupling. Functions are present to bring together multiple repetitions. Defined    Function Primitives:

JavaScript DOM Programming Art (1)---> JavaScript syntax

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

JavaScript (b): Data Types & Values

Part I: Data typesJavaScript data types are typically 6 (ES6 new seventh Symbol type)Number: valueString: StringsBoolean: Boolean type, True or Falseundefined: No value assignednull: null, value is "none" stateObject: ObjectsUsually

Arrays in JavaScript traverse the foreach () and Map () methods and the compatibility notation

Original link: Principle: Advanced browsers support the Foreach methodSyntax: both foreach and map support 2 parameters: One is the callback function (Item,index,list) and the context;

JSON (JavaScript object Notation, JS objects tag)

JSON (JavaScript object Notation, JS tag) is a lightweight data interchange format. It is based on a subset of ECMAScript (the JS specification developed by the consortium) that stores and represents data in a text format that is completely

JavaScript OOP classes and objects

Object What is an object     All things in JavaScript are objects: strings, numbers, arrays, functions ... In addition, JavaScript allows custom objects to be customized.In a word, everything is an object in JavaScript. How to

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