One of the JavaScript (rolled up) reading notes you don't know----scope

You don't know. JavaScript (roll up) This book seems to me to be a good book, the book in a relatively concise language to describe the JS of those "pits", here to write some blog record notes for digestion and absorption.1 Compilation PrincipleIn

JavaScript operation svgdom for map function

1, the customer requested to do a shop map, enter the store can view all the shop floor information, click on the map map of a block area, display the corresponding store information. (Provides floor screening, public facility inquiries), and map

JavaScript Regular Expression object method comparison of compile () exec () test ()

The compile () method is used to compile regular expressions during script execution, and can also be used to change and recompile regular expressions.The exec () method is used to retrieve the matching of regular expressions in a string. Returns an

JavaScript uses Btoa and Atob for Base64 transcoding and decoding

Always can't remember these two functions, simply write down, better turn.Avascript Native API was originally supported, Base64, but due to the limitations of the previous JavaScript, resulting in Base64 basic see useless. When the current HTML5

In layman's JavaScript closure (Closure)

Closures (closure) are a very important threshold for mastering JavaScript from the human door to the deep, which is a difficult and characteristic of the JavaScript language, and many advanced applications rely on closures.closures-EverywhereIn

JavaScript determines the existence of elements and determines the way elements exist in real-time DOM

Today (Saturday) afternoon when I was working overtime in the company do not know what to do, open the company's WordPress project site, want to see a Web page before you do not have a problem.Open the website homepage, I habitually opened the

Object oriented JavaScript Advanced programming notes

Speaking of object-oriented, most programmers first think of classes. Classes allow you to create many instances or objects that have common properties and methods. But JavaScript doesn't have a class concept, and almost everything in JavaScript is

Deep understanding of properties and features in JavaScript

In-depth understanding of properties and features in JavaScript?The properties and attributes in JavaScript are two completely different concepts, and I'll take a closer look at the properties and features in JavaScript, based on what I've

The beauty of JavaScript functions ~

the beauty of JavaScript functions ~In this article, I will recognize the functions in JavaScript in the following ways. Why is a function an object and how do I define a function ? How to understand that a function can be passed as a

JavaScript array de-weight-efficiency test

Array de-weight, front-end interview loves the problem, the problem is simple and can see a programmer to the computer program implementation process of understanding how.There are a lot of ways to get an array, which is the ideal one, I'm not sure.

Learn JavaScript natively in minutes

JavaScript is an object-and event-driven, client-side scripting language that consists of the ECMAScript---------------standard syntax BOM (Browser Object Model) Dom (document)------- Browser-provided extensions Api:application programming Interface

WeChat applet to delete the project implementation steps, Applet Project

The implementation steps for deleting a project by using a Applet How does a applet delete a project? The small program is very popular now. Maybe the front-end engineer has a spring approaching. Recently I learned this part of knowledge and also

Code for adding or subtracting the number of Shopping Cart items and jQuery item quantity implemented by jquery

Code for adding or subtracting the number of Shopping Cart items and jQuery item quantity implemented by jquery This example describes how to add or subtract the number of cart items in jQuery. We will share this with you for your reference. The

On the morning of April 9, November 19, the css style sheet was created on the morning of April 19.

On the morning of April 9, November 19, the css style sheet was created on the morning of April 19. --- Restore content start --- Style sheet: I. Inline: The style attribute is directly added to the label of the Content in the body. For example,

Question about the effect of making an advertisement bar in css3 ?, Questions about creating an advertisement bar in css3

Question about the effect of making an advertisement bar in css3 ?, Questions about creating an advertisement bar in css3 [Arrangement] Original: https://segmentfault.com/a/1190000007087701 I am a newbie. I am forced to add useless classes during

CSS + radius five rings, cssradius five rings

CSS + radius five rings, cssradius five rings Using CSS external links, write a fifth ring CSS layoutUse of additional radius Ideas:Put two sub-boxes in a large box;Two sub-boxes are arranged up and down, and three and two boxes are

Css01 background design, css01 background

Css01 background design, css01 background * {Margin: 0px;/* set the margin of all elements on the webpage to 0 */} # Nav {width: 230px;/* maximum div width */} . Title {height: 30px;/* div height */line-height: 30px;/* content Row height */color:

CSS3 Transitions, Transforms and Animation usage, css3transitions

CSS3 Transitions, Transforms and Animation usage, css3transitionsI. Preface Several attributes related to CSS3 animation are: transition, transform, and animation, which are understood as transition, transformation, and animation. Although the

Seajs learning module dependency loading and module API export, seajsapi

Seajs learning module dependency loading and module API export, seajsapi Preface SeaJS is very powerful. SeaJS can load arbitrary JavaScript modules and css module styles. SeaJS will ensure that you have loaded other dependent modules into the

Css3 selector and css Selector

Css3 selector and css Selector Wildcard SelectorThe wildcard selector takes effect for all elements on the page,All the tags on the page will display the style set by the wildcard selector.The disadvantage is that it affects the page rendering time.

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