JavaScript

20, Bookmarklet 1, what is bookmarklet. (What ' s a bookmarklet?) Q: what is bookmarklet. A: Bookmarklet is a small piece of JavaScript program that is all included in the hyperlink URL. (JavaScript URLs are like this: . Most browsers allow users

This is a small web memory note, look like this.first, how to useYou can use it to record your to-do list, first enter the name of the item you want to add in the taskbar, and click Add item to automatically join the to-do lists.And then in the list

Original demand: Prevent the button to trigger a click event in a short time, due to repeated submissions caused by the business exception.Figure:DemoDOCTYPE HTML>HTMLLang= "en"dir= "ltr"> Head> MetaCharSet= "Utf-8"> styleMedia= "Screen">.

Recently learning JavaScript, there is a very strange problem, first put out the code:functionBinarySearch () {vararr = [0,1,2,3]; varres = Actbinarysearch (0,3,2, arr); document.write ("return is" +res);}functionActbinarysearch (Left,right,val,arr)

HTML Event handlersThe HTML event processing order is to write an event to the start tag of an element as a property, as in the following click event:HTNL event handlers Buttons Javascript&jquery.html event Handler

Number : Exactly the same as the number of JavaScript; Boolean : Is the true or false;string of javascript: the string of JavaScript; NULL : The Null;array of javascript: The array representation of JavaScript is --[];object: javascript {...} The

Basic data type:Number,boolean,string,undefined,null reference types: object,array,function, Difference: Reference types can add properties and methods, and primitive types cannot typeof operators: typeof is the best tool to determine whether a

Dom is an event listenerDOM Event Listener allows an event to trigger multiple methods, which are applied more in the actual work.dom Event Listener 1 button Calling a parameter function in the listenerdom Event Listener 2 button

Or this small site project, you need to control an input box of the input content,Record the encoding process here.Demand:Available Input range:A-ZA-Z0-9- / / Short Horizontal Line _ // Short underline . // dots ' // single quotation marktype

The topic describes how to modify the invocation of parseint in the JS code so that it is entered through all test case Example 1' 12 'Output12Example 2 input replication' 12px 'Output replication12Example 3 input' 0x12 'Output0function Parse2int

1. Convert other data types to number typeNumber (), strictParsefloat/parseint-Not strict1) Convert the Boolean type to a number true->1 false->02) Convert null/undefined to digital null->0 Undefined->nan 10+null=10 10+undefined=nan3) Convert [] to

There are many articles on the Internet to determine whether the picture has been loaded, but some browsers are not suitable, the following small section to share some of the JavaScript to determine whether the picture has been loaded complete

What is a regular expression?A regular expression is a search pattern formed by a sequence of characters. Can be used for text search and text substitution.syntax :/regular-expression body/modifier (optional)var patt=new

CookiesA Web application transmits data using the HTTP protocol. The HTTP protocol is a stateless protocol.Once the data has been exchanged, the client-to-server connection is closed, and exchanging the data again requires establishing a new

First, the introduction of JavaScript: This is a divSecond, JavaScript basic syntax: 1. Definition: var iNum01 = 12,STR = ' abc ', bismove = true; If no type and value are defined, the default is undefine var iNum02;2.js base type: 1, number numeric

HTML: Hypertext Markup LanguageCSS: Structured cascading stylesselector {Property Name: property value;}javascript: Interaction/EffectsOn-Machine Exercise 1vararray=["America", "Greece", "Britain", "Canada", "China", "Egypt";var count=0;for (var i

JS is a type of object-based language, he has no relationship with Java;JS Label Placement Location: 1. Inline 2. External 3. Internal;JS Code has a sequence of execution, which is different from the CSS code, when the object is not loaded or not

Simple Factory mode1. Object creation through class instantiationThe traditional use of object-oriented methods to create a lot of classes to implement some function is not appropriate, so not only occupy a lot of class names, and others use these

Closed Packageis to declare a function in a function that returns a reference to an intrinsic function at the end of the external function, and then when the external function is executedGenerates a reference to an intrinsic function, because the

All things in JavaScript are objects: strings, numbers, arrays, functions ...In addition, JavaScript allows custom objects to be customized.JavaScript objectsJavaScript provides multiple built-in objects, such as String, Date, Array, and so