JavaScript

Before learning JS is just w3school on the basic grammar to see once, and then when the fine reading, the book will appear many many not heard of the grammar, one of which is JS inheritance and always see the prototype. I mainly look at the two JS

1. What is the JavaScript parsing engine?In short, the JavaScript parsing engine is a program that can "read" JavaScript code and accurately give the result of the code running. Let's say that when you write var a = 1 + 1 , so a piece of code that

original value and reference valueIn ECMAScript, a variable can hold two types of values, that is, the original value and the reference value. The original value (primitive value) is a simple data field stored in the stack (stack), that is,

You can use number as function/variable name, the numberic name can ' t is accessed from the parent scope, and can be accessed B Y ' this ' in private scope.var o= { attr1:' value of attr1 ', 1: ' Private attr, the index is 1 ', 3

1. Mouse click event (onclick)(1) Syntax: onclick= "message ()";(2) Role: The mouse click on the page button, will call the corresponding program block, usually with buttons (button) to use(3) Example: 2. Mouse over event (onmouseover)(

1.confirm message dialog boxSyntax: Confirm ("str");Parameter description: STR is the text to be displayed in the dialog box,Function: Usually to remind the user to make certain choices, its return value is Boolean type, click OK return value is

My QQ number: 1539832180. Welcome to discuss the study together. *****1. If you define a variable, you cannot add quotation marks.Because in most languages, the contents of single quotation marks (or double quotes) represent strings.2. If you define

An array is an ordered set, and the type of the elements in the JavaScript array can be arbitrary, and the type between the different elements of the same array can be different. An array is also an object, with a length property that records the

1. Basic typesThere are several basic data types for Javascript: Number String: Boolean: Undefined: When you access a non-existent variable, you get it undefined . It is also available when you define a variable but do not

Use JavaScript to switch the input box to enter the focus of the function, not carriage return line oh, in textarea, carriage return line is the default function, but to use carriage return in textarea to toggle the input box focus function, the

Introduction to DSL metaprogramming in JavaScript This article mainly introduces DSL meta-programming in JavaScript. This article describes JavaScript meta-programming, JavaScript eval, JavaScript new Function (), and other content. For more

JQuery implements gradient pop-up layer and pop-up menu This article mainly introduces jQuery's method for implementing the gradient pop-up layer and menu. It involves jQuery's gradient effect and css display implementation skills and has some

How js senses changes in the transparency of mouse Images This article mainly introduces how js senses the transparency of mouse images. It involves javascript mouse operations and css modification techniques and has some reference value. For more

Methods for judging Successful loading of JS files in IE and IE6 browsers This article mainly introduces how to judge Successful loading of JS files in IE and IE6 browsers. This article uses vbscript to solve this problem. For more information, see

The effects of image loading and page loading implemented by jQuery oLoader, OLoader usage Both oLoader and oPageLoader are based on jQuery. Therefore, you must load the jquery library before calling the function. The author has integrated the two

Detailed description of JavaScript data structures and algorithms stack, data structures and algorithms As described in the previous blog, the list is the simplest structure. However, if you want to process complicated structures, the list is too

How to simulate the rolling effect of Sina Weibo homepage using jQuery This article mainly introduces jQuery's method of simulating Sina Weibo's homepage rolling effect. The example shows jQuery's technique of using animate, css, and other methods

Getting started with Jquery tree plug-in zTree This article mainly introduces the Jquery tree plug-in zTree usage getting started tutorial. The example analyzes the use skills of the zTree plug-in, which is very useful. For more information, see   

How to copy image addresses to clipboard by clicking images in js This article mainly introduces how to copy image addresses to clipboard by clicking images in js. It involves js node operations and is very useful. For more information, see    This

Js: How to scroll and stop an image when the mouse goes through This article mainly introduces how to scroll and stop an image when the js mouse passes by. It can be used to stop the image scroll by hovering over the mouse in the js scroll effect,