JavaScript

Basic conceptsEvent delegation, in layman's terms, is to put an element in response to an event (click, Focus ...). ) is delegated to another element;In general, an event of one or a group of elements is delegated to its parent or to the outer

When the assignment prototype is prototype, the function executes immediately to assign the value, and return exposes the method that you want to call externally to achieve the public/private effect.1 　　 functionCalculator () {2 This. num

Today's introduction is about five ways to "inherit" between objects. (from Nanyi)For example, there is now a constructor for an "animal" object.function Animal () { this" animal "; }There is also a constructor for the "Cat" objectfunction Cat

"Scope"The scope in JavaScript can be understood as the size of a statement's environment, global scope, function scope, and eval scope. There is no block-level scope in JS.When it comes to scopes, we have to talk about the execution environment,

In this lesson you'll create a utility function that allows you to quickly compose behavior of multiple functions to CRE Ate new behavior. By the end, you'll have successfully created a tremendously popular helper function that's used in JavaScript

Math.random()Returns one between 0 (inclusive) and 1 (not included) Number . so we have an interval like this:Now, we want a min number between (contained) and max (not included):[0 ... ... 1] [Min.................................max] (......).......

These two days to do a full selection of anti-election cases, using a number of methods, just beginning to write the stumbling, listen to the teacher after explaining the idea, then to write it is very easy. In fact, it is a question of thinking

map Definitions and methodsThe Map () method returns a new array in which the elements of the array are called after the function is processed by the original array element.   Map () method processes the elements sequentially, in the order of

Randomly generates 10 0~100 of non-repeating numbers (including 0 and 100);Knowledge points to use: random numbersGo heavyPut the code belowDOCTYPE HTML>HTML> Head> MetaCharSet= "UTF-8"> title>title> Head> Body> Script>/

1. Iterative Methods　　every (FN): runs the given function for each item in the array, and returns True if the function returns true for each item.　　Some (FN): runs the given function for each item in the array, and returns True if the function

Afunction and object of love and hatredeverything is object, but not all are objects, where undefined, number, String, Boolean) are simple value types , not objects. The rest of the situation -functions, arrays, objects, NULL, or new objects-are

Individuals tend to require.jsAMD is the normalized output of the module defined by REQUIREJS during the promotion process.CMD is the normalized output of the module defined by SEAJS in the process of generalization.Similar to the CommonJS modules/2.

Font Awesome (a set of great icon libraries), fontawesome Font Awesome is a very convenient icon library. These icons are vector images and saved in.svg. These icons are the same as the font. You can specify their size through pixel units, which

CSS color representation, css color You may wonder why we use six digits to represent a color instead of one or two. The answer is that we can use six digits to provide us with a huge number of color changes. How many colors are there? 16 values (0 ~

Overall site planning (webpage loading speed, how to plan static webpages) and static webpages 1. Related Concepts Server: provides data-related services for computers connected to the network (Marvin considers it to be data retrieval ). Path:

Getting started with Vue exercises and getting started with vue Title {{ message }} {{ num1 + num2 }} {{ temp? Name: name2 }} big people tend to be worried because the children worship the picker, postman, and crane drivers, children

How to mount a route entry to the head of a vue, and how to mount a vue The route is written, but the correct way to switch the route is not to enter the address in the address bar. The way to switch is to click the navigation menu in the header,

Vue component communication sub-and parent-details (2) vue component communication details Then, the vue component will continue to learn about the parent-child communication. 2. Communication between components (sub-components pass values to parent

Based on jQuery's $. getScript method to load javaScript file parsing, jquery. getscript 1. The code for the two files is as follows: 2. 3. Resolution: Comments is an array.Comment is an object. Comments is an array, specifically a json array,

Describes how to use webpack to write the jsx syntax and webpackjsx In the vue project. This article describes how to use webpack to write the jsx syntax in the vue project. The details are as follows: We know the support for virtual DOM in Vue 2.0.