JavaScript

JavaScript toLowerCase Method The toLowerCase method is used to convert the (English) string to lowercase and returns the converted string. The syntax is as follows: Copy Code code as follows: Str_object.tolowercase () toLowerCase

Brief introduction Did you know that JavaScript is actually a functional programming language? This guide will teach you how to use the functional features of JavaScript. Requirements: You should have a basic understanding of JavaScript and

Data type There are 5 simple data types (also known as basic data types) in javascript: Undefined, Null, Boolean, number, and string. There are also 1 kinds of complex data types--object,object are essentially composed of a set of unordered

The definition of a diagram Graph is composed of a set of vertices with a poor non-empty set and an edge between vertices, usually expressed as: g (v,e), where G represents a graph, V is a set of vertices in graph G, and E is a set of edges in

Copy Code code as follows: function class name (parameter table) { this. property; ...... this. function; } In this way, functions and data members are all using the "this." To achieve. We define a simple class student and

An array of definitions. There are two ways to define an array: 1, var arr1 = []; Define an empty array 2, var arr2 = [1,2,3, "str1", "str2"]; Defines an array that has 5 elements. 3, var arr3 = new Array (3); Define an empty array 4, var arr4 =

Five iterative methods accept two parameters: the function to run on each item and the scope to run the function (optional) Every (): Runs the given function for each item in the array. Returns True if the function returns true for each item.Filter

First, what is Unicode? Unicode stems from a very simple idea: to include all the characters in the world in a set, the computer only supports this character set, you can display all the characters, no more garbled. It starts with 0, and assigns

jquery This write less do more frame, with a lot of will inevitably to native JS Yangaoshoudi. Small dishes In fact do not want to write this blog, seemingly very elementary appearance, but see the network even the original JS event binding and

Key code values for letters and numeric keys (keycode) Key keypad key Code key key Code key key code A J 83 1 49 B K-T 84 2 50 C L 85 3 51 D (M) 86 4 52 E-N-W 87 5 53 F X 88 6 54 G-P-Y 89 7 55 H, Q, eight, 90, 8, 56. I 82 0 48 9 57 Key code

When you use JS to write functions at ordinary times, it is common to declare a function in the manner of the customary function fn () {}, and when reading some excellent plug-ins it is unavoidable to see var fn = function () {} The creation of such

We all know that in the JS string length is not divided into English characters, each character is counted as a length, this and PHP strlen () function is not the same. The strlen () function in PHP GBK each 2 of the Chinese characters according to

Recently has been using JS, a good study of the next JS array operation, summed up here. 1, the creation of the array Copy Code code as follows: var arrayobj = new Array (); Create an array var arrayobj = new Array ([size]);

A recent look at John Resig's work, "Pro JavaScript Techniques," describes how to make JavaScript type judgments. Two methods are introduced in this paper, one is to use TypeOf, the other is to use constructor. It is a little pity that as the author

JavaScript Deep Clone Object Today to do the project, there is a need to use the deep cloning object, and requirements in the prototype chain programming so whim simply to review this knowledge, on the Internet to find the appropriate knowledge,

Using the typeof operator on a value may return one of the following strings:"Undefined"--if this value is not defined"Boolean"--if this value is a Boolean value"String"--if this value is a string"Number"--if this is a numeric value"Object"--if this

As long as you write a bit of JS code, very simple a var is finished. What happened to the JS compiler behind it? Then step by step through the code. Copy Code code as follows: x = 1; alert (x); var y = function () { alert (x);

This example describes the JavaScript syntax Gao Lianku highlight.js usage. Share to everyone for your reference, specific as follows: Highlight.js is a JavaScript based grammar Gao Lianku, currently supports 125 programming languages, there are 63

This article examples for everyone to share a simple JavaScript, jquery practical demo, for your reference, the specific contents are as follows JavaScript Judge H5 Page left function Onbeforeunloadfn () { console.log (' leave page '); ...

Copy Code code as follows: String.prototype.trim=function () { var _argument = Arguments[0] | | " "; var _re= new RegExp ("(^" +_argument+ "*) | (" +_argument+ "*$", "G"); Case sensitive Return This.replace (_re, ""); }