JavaScript

This var name = "the window";　　　　　　var object = {Name: "My Object", Getnamefunc:function () {return function () {return this.name;　　　　}; }　　}; Alert (Object.getnamefunc () ()); Return "The Window", function weight return external function,

functionUnique (arr) {varresult = [], hash = {}; for(vari = 0, elem; (Elem = Arr[i])! =NULL; i++) {//Loop arr Array if(!hash[elem]) {//Hash Array function: Determine whether the current element existsResult.push (Elem);//does not exist:

Description (2017.3.30):1. The simplest way to inherit, mix12345Document678 - +JavaScript Advanced Object-oriented (5)-The simplest way to inherit, mix

data binding enables you to synchronize the property values of elements in a page with the data in the data source, where the data source can come from databases, files, and custom data. In a common data-binding approach, a simple object binding is

In the development of the program will inevitably encounter some errors, in thousands of code to find errors is clearly equivalent to a needle in the haystack, for this reason, each computer programming language has its unique set of error handling

After implementing the main page and the category page, finally take a look at the implementation of the menu page, which is used to detail a dish or staple food, such as name, picture, and specific practices. Add a folder named Fooddetail to the

1. Scope"JavaScript does not have block-level scopes ." The so-called "block" is the statement in the middle of the curly brace "{}". For example, if statement:Another example is the FOR statement:So, when we write the code, do not declare the

The This scope in JavaScriptThe difference between this scope Java in JavaScript is that this in Java is determined in the compilation,The This in JavaScript is determined at run time, with different invocation methods, which determines that this in

　　JavaScript expressionsExpressions are formulas that are used to evaluate JavaScript scripts when they run, and can contain constants, variables, and operators　　JavaScript operators1, arithmetic operators: + 、-、 *,/,%, + + 、--; note (as long as one

1.bind related usageFun.bind (obj) passes obj into the fun as its scopeFun.bind will return a new function address, fun.bind (obj)!=fun.bind (obj)Repeated bind only works for the first timeTruth in 2.js0, "", null, Undefined, false, Nan to Boolean

Efficient JavaScript Web applications must be smooth and fast. Any application that interacts with the user needs to consider how to ensure that memory is used effectively, because if it consumes too much, the page crashes and forces the user to

CSS Supplement     position:  # #多层         a.  fiexd =>  fixed to a location on the page          # #返回顶端          b. relative + absolute                                         # #以外面的父级div框为标准, positioning yourself                  opcity: 0.5 

& Lt;/html>　　 　　 Happy Little Two-force Event bubbling I am Div01pao I am Div02pao Level two DOM events Level two DOM event bubbling I am div01pao I am Div02pao Block default behavior

name global variables DOM element initial food name: Little Practice Digital 1 digital 2 Dombom Little apple Small durian Pumpkin Small husky

jquery is an extension of JavaScript, encapsulation, is to make JavaScript better use, more simple, in order to illustrate the difference, below to share with you the next JavaScript and jquery common methods comparisonjquery is an extension of

The previous landlord briefly introduced the implementation of the JavaScript data structure stack, http://www.cnblogs.com/qq503665965/p/6537894.html, this time will introduce the implementation of the queue.A queue is a special linear table, except

JS in the type:Standard type: number, String, Boolean, Null, UndefinedBuilt-in object types: Function, Array, Date, RegExp, Math, JSON ...Type identification:1, typeof: Can identify the standard type (except Null, undefined), cannot judge the object,

Questions:There are two methods in the JS data type Object.prototype.valueOf and Object.prototype.toString, what is the difference between the instance and the two?We perform the following example Steps:Case 1. var test={age

    This article mainly introduces the JavaScript regular expression and string regexp and string (a) of the relevant information, the need for friends can refer to     Preface     Regular expressions are a very important and common feature of

In-depth understanding of float, inline-block, and floatinline-block This article mainly introduces the introduction of float and inline-block, and analyzes the compatibility and influence on the parent element. It is recommended for reference by