JavaScript

Interfaces are the basis for object-oriented programming. It is a set of data structures that include a functional approach, as with classes. are more abstract concepts in programming languages. For example, the interface in life. Stb. It is used to

JS array element Additions and deletions have been confused, today finally found the details of the information, first give me a test code ^-^var arr = new Array ();Arr[0] = "AAA";ARR[1] = "BBB";ARR[2] = "CCC";alert (arr.length);//3Arr.pop ();alert (

function expression immediately called PrefaceWhen you learn JavaScript, you often encounter code that executes anonymous functions, and today we mostly think about self-executing.Before learning more about this, let's talk about the

ObjectiveThe queue and stack are similar, but with different principles. A queue is an ordered set of items that follow the FIFO principle, and the queue adds new elements at the end, removing elements from the top. The newly added element must be

First, Document.formName.item ("itemname") problemProblem description: Under IE, you can use Document.formName.item ("ItemName") or document.formName.elements ["ElementName"];firefox, Use only document.formname.elements["ElementName"].Workaround:

The data types in 1.JavaScript include: string, number, Boolean, null, Undefined, Array, object.The data types in 2.JavaScript can be divided into primitive types and reference types. Where string, number, Boolean, NULL,Undefined belong to the

ObjectiveRecently read the book "JavaScript design Mode". There is a lot of knowledge in the book, which can not be digested in a moment. Write it down first.PS: Another part of the content of Uncle Tom Blog in-depth understanding of the JavaScript

1. Top-level functions (global functions)1) the IsNaN () function is used to check whether its arguments are non-numeric values. -----IsNaN (x) x is a required parameter, and if X is a special non-numeric value NaN (or can be converted to such a

1....　　Detect IE Browser by using JavaScript

First, RegExp1.1 create RegExp ObjectNew RegExp ("required, Regular expression", "optional, matching pattern g,i,m")1.2 Methods for RegExp objects Test: Retrieves the specified value in the string, returning True or false. EXEC:

　　There are two ways to declare a function in JavaScript: function declaration and function expression . What's the difference between them?　　The difference is as follows:(1), a function that is defined as a function declaration, the function name

Tag:text    Code    get   tracking   data     Object    content    presence     one     Untitled document Examples of three scenario codes for Boolean types in JavaScript

After reading a few books some understanding and own ideas.　　  scopes, the scope of the variables   declarations of variables before ES6   only VAR can declare variables to belong to a scope, and also only global scope and function scope. (variables

I. OverviewJavaScript is a literal-translation scripting language, which is a dynamic type, a weak type, a prototype-based language, and a built-in support type. Its interpreter, known as the JavaScript engine, is widely used as a scripting language

Keyboard events include the three events onkeydown, onkeypress, and onkeyupEvent initializationfunction KeyDown () {} Document.onkeydown = KeyDown; The KeyDown () function is called when the key on the keyboard is pressed.Dom Standardfunction

Today, when I read "JavaScript Dom programming Art", I saw that I was unfamiliar with the + = Connector ( small white one, please do not ridicule)"+ =" connector, which can be considered as "addition and assignment" (or "stitching and assigning")For

JavaScriptSensitive to caseComment Line with://Notes for multi-sweat:/* */Declaring variables: var variable name (variable declared with no value, value undefined)JavaScript variables are objectsYou can use the keyword "new" to declare its typevar

A responsive pc-side project, enterprise website test9     I. Introduction of the bootstrap framework   The bootstrap raster system has been suffering yesterday. Why? I originally wanted to learn the grid layout while using code words. But failed.

CSS removes the default outline outer box and css outer box of the browser. By default, When you click tag a, input, or add a click event, the browser leaves a contour box (blue under chrome )~ However, these default profile boxes sometimes affect

Deep understanding of CSS learning notes border and css learning notes 1. border-width Border-width does not support percentages: semantics and scenarios are determined. In reality, the concepts of borders do not support percentages. Border-width