javascript mind map

Categorized as: 　JavaScript variables JavaScript operators JavaScript arrays JavaScript process statements JavaScript String functions JavaScript function Basics

. These proprietary events are typically tailored to the developer's needs, and there are no specifications, so implementations of different browsers may be inconsistent.The following is a summary of the UI events and focus events in JavaScript Advanced programming:UI events refer to events that are not necessarily related to user actions. These events exist in this or that form before the DOM specification appears , and are reserved for backwards com

There are many types of events that can occur in a Web browser. As mentioned earlier, different event types have different information, and the " DOM3 Level Event" Specifies the following types of events: uiuser interface Focus event, triggered when the element gets or loses focus; Mouse event: triggered when the user performs an action on the page with the mouse; Wheel event: triggered when using the mouse wheel (or similar device); Text event: trig

　　There are many types of events that can occur in a Web browser. As mentioned earlier, different event types have different information, and the " DOM3 Level Event" Specifies the following types of events. uiuser interface Focus event, triggered when the element gets or loses focus; Mouse event: triggered when the user performs an action on the page with the mouse; Wheel event: triggered when using the mouse wheel (or similar device); Text event: tri

Knowledge Point: Mind-reading principle algorithm exclusive disclosure, HTML5 the latest selector, native JS dynamic dom generation, control flow explanation, function encapsulation and modular thinking, timer mixed use and frame animation, JavaScript knowledge system sharing.HTML code:CSS code: JavaScript code: Interested in learning to learn

The width of the screen height that the Availheight,availwidth window can useThe length here is minus the length of the status bar, by default, Windows availheight is smaller than the height, if the status bar to move to the left and right side, availwidth will become smallerJudging the browserIE browser before using MSIE can judge, but IE11 can't judge, the fourth line is the new Judgment method1 varUa=navigator.useragent;2 varBrowser="Unknown";3 function Check () {4

the order of the elements in the arraySort (): Sorts a character or array of numbers by default, by string comparisonArray conversions:ToString () is converted to a string and returnstoLocaleString () converts to a local format string and returnsJoin () splits the array with the specified delimiter and converts to a stringLocation Method:IndexOf (parameter 1, parameter 2) is searched from the location of the array, and parameter 1 finds the entry 2 that represents the starting position of the l

Object-oriented (object-oriented, OO) languages have a sign that they all have the concept of a class, and that a class can create any number of objects with the same properties and methods. There is no class concept in ECMAScript, so we can use objects to simulate the class. ECMA-262 defines an object as: "A collection of unordered attributes whose properties can contain basic values, objects, or functions." "Strictly speaking, this is equivalent to saying that the object is a set of values tha

Because event handlers can provide interactivity for modern WEB applications, many developers are indiscriminately adding a large number of handlers to the page. In JavaScript, the number of event handlers added to the page will directly affect the overall performance of the page. The causes of this problem are manifold. First, each function is an object, consumes memory, and the more objects in memory, the worse the performance. Second, you must spec

Eight mind maps in JavaScript-Date usage, eight dates Unconsciously, it has been more than five years since the front-end. The emergence of front-end frameworks, such as jQuery, Angular, Vue, and React, and nodejs, and even other servers are the final analysis, I always feel that the core of everything isJavaScript. So I recently came up with an idea that I want to sort out my experiences in learning and

　　There are many types of events that can occur in a Web browser. As mentioned earlier, different event types have different information, and the " DOM3 Level Event" Specifies the following types of events. uiuser interface Focus event, triggered when the element gets or loses focus; Mouse event: triggered when the user performs an action on the page with the mouse; Wheel event: triggered when using the mouse wheel (or similar device); Text event: tri

　　There are many types of events that can occur in a Web browser. As mentioned earlier, different event types have different information, and the " DOM3 Level Event" Specifies the following types of events. uiuser interface Focus event, triggered when the element gets or loses focus; Mouse event: triggered when the user performs an action on the page with the mouse; Wheel event: triggered when using the mouse wheel (or similar device); Text event: tri

When we were a child, we used our own hands to play the puzzle game. Today, we will study and use javascript to make puzzles. If you are interested, I hope this article will help you. When you were a child, we used to play the puzzle game, and we used our own hands to work on it. Today we are going to study how to use javascript For puzzles. It is also a puzzle, but it is much more complicated to use js puz