JavaScript

This article details the JavaScript expressions, which are divided into original expressions and complex expressions. Generally speaking, the basic grammar of JavaScript, people listen to a lot of terms are operators and statements. However, there

Yesterday when the annual meeting to see a joke said only the annual lottery, the results of the lottery is written by the department, the CTO Field Review code. A simple thought about the lottery implementation of the program, took more than 10

The method of output information in JS is as follows: 1. Document Flow output document.write (' Hello '); 2. Output Information Prompt box modal dialog box Window.alert (' to output the displayed content '); or alert (' to

The problem with strings is often encountered in JavaScript, but it is more cumbersome to have strings that are spliced too long. If it is on a line, the readability is not said, if you want to change the line, will directly error. Here are some

Description: this. html file must have:(1) The Json,json folder must have the file Data.txt, the contents of the file Data.txt are: [{"Imgsrc": "Img/banner1.jpg"}, {"IMGSRC": "Img/banner2.jpg"}, {"IMGSRC": "Img/banner3.jpg"}, {"IMGSRC":

3D maps are also called scenes.From the previous article,The first argument to the Require entry function is a string array["Esri/map", "Esri/views/mapview", "dojo/domready!"]Here, Mapview is the map view of 2D.So, to change the map to 3D map, it is

URIIn Wikipedia, the explanation for URIs is this:In computer terminology, a Uniform Resource identifier (Uniform Resource Identifier, or URI) is a string that identifies the name of an Internet resource. This type of identification allows users to

Select All and invert check boxes in jQuery, and select all jquery check boxes. For more information, see the code. Document apple bananas orange The above is all the content of this article. I hope this article will help

Example of array deduplication and flattening in Javascript, javascript Array Array judgment Before we talk about how to deduplicate and flatten arrays, let's first talk about how to judge arrays, because to process arrays, we must first determine

Solve the problem that ajax cannot access local files (using js cross-origin principle), ajaxjs The blogger encountered a difficulty in developing a non-Background query system with only the front-end. How to Use Ajax to read his local json file,

Use JS to achieve the effect of text aggregation animation and js text aggregation Animation Preface The principle of text aggregation is to divide the container into several small pieces and then set each small part.background-poisition Finally,

Summarizes various operations of Javascript on array objects, and summarizes javascript Array Array definition: in short, it is a group of ordered data sets. Its index is an integer that starts from 0 and naturally increases. Its element value can

Detailed description of the pre-Compilation Principle and JavaScript Compilation Principle in javascript Principle of JavaScript pre-Compilation Today, I spent a lot of time reviewing the scope, pre-compilation, and other knowledge. I read a lot of

Javascript automatically converts lowercase letters entered by users to uppercase letters. js uppercase letters Example: The above JavaScript code automatically converts lowercase letters entered by the user to uppercase letters, which is a

Parameter methods for js browser operations, js browser Parameters Example: Function getQueStr (url, ref) // obtain the parameter value {var str = url. substr (url. indexOf ('? ') + 1); if (str. indexOf ('&')! =-1) {var arr = str. split ('&'); for

Click the pop-up dialog box of the jQuery pop-up layer, click the modal box, and the code sharing will disappear. jquery Mode If you don't talk much about it, paste the Code directly. The specific code is as follows: jQuery pop-up modal box

Advanced use of ng-options and ng-checked in forms (recommended), ngchecked AngularJS is a very popular front-end framework. It has a lot of syntactic sugar and greatly facilitates front-end developers. However, you still need to think about its

Example of jQuery regular expression-based form verification function, jquery Regular Expression This document describes jQuery's form verification function based on regular expressions. We will share this with you for your reference. The details

Vue. js is used to achieve full checkbox selection and inversion. vue. jscheckbox Preface This article mainly shares with you the use of Vue. in js, the checkbox option is reversed. A bug exists in the previously written code, that is, when you

Several methods for creating common js objects and js objects 1. Create an object literally Var obj = {a: 1, B: 2 }; Note:An object literal is an expression that creates and initializes a new object and calculates each attribute value of the new