JavaScript

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Dynamic typeJavaScript is a weak type (Dynamic language). This means that the type of the variable is not declared until it is used, and its type is automatically acknowledged when the program is run.Data typeThere are five simple data types in

The most common object that we use in JavaScript is the Document objectDocument object: Each HTML document that is loaded into the browser becomes the document object. We can use the Document object to access the elements in the

Originally I wanted to write a high-level programming summary, the results found that I entered a door, all the words in the word to understand verbatim, all the description has been very refined, my original idea is tantamount to mice eat elephants.

Number type: Represents a numeric data type and an object that provides a numeric constant.First, Number property:The number type has some static properties (properties that are called directly through number, without the new operator) and

One, to meet the reading habits of the date format, directly displayed on the Web page, without the form of a popup boxIdeas:1. Get the current date time object2. The date and time of the year and seconds, respectively, to get out, stitching into a

To facilitate operation of the base type value, JavaScript provides 3 special reference types: Boolean, number, and String.These types are similar to other reference types, but also have special behaviors corresponding to their respective base types.

There are two ways to define a function in JavaScript, one is a function declaration and the other is a function expression. There are a few subtle differences between the two ways of defining. 1. function declaration:function keyword + function

IntroducedFirst explain the two concepts:function throttling (throttle): A function cannot be called consecutively within a short interval of time, and the next call to the function is made after the last function has been executed at a specified

Web page loading a large picture, often to load a long time;Moreover, in the loading process, can not well control the style of the picture, prone to dislocation and other display errors;If you can load a large image, first use a smaller loading

Document ObjectFirst, find the objectdocument.getElementById ("id");//Search by ID, find at most one, because the ID is unique;Document.getelementsbyname ("name");//Search by name, find out the array;document.getElementsByTagName ("div");//based on

1:ECMAScript contains 2 different data types, base numeric types, and reference numeric types. The basic data types are simple data segments, and reference types refer to objects that may consist of multiple values. 1.1: Common basic types:

How to Use the HTML5 location locating Function How to Use the HTML5 location locating Function With relatively simple JavaScript code, you can create a Web application that can determine the geographical location details of users, including

Example of a pop-up window in the lower right corner of javascript implementation, and a pop-up window in javascript This article describes how to use a pop-up window in the lower right corner of javascript implementation. Share it with you for your

Using JavaScript to delete array elements by value This example describes how to delete array elements by using JavaScript values. Share it with you for your reference. The specific implementation method is as follows: The Code is as follows:

Js object-oriented learning note 2 (debug debugging method)1. js debugging   Obviously, js debugging can only be printed through alert alert(id); For complex data types, we can convert them to json format before the

How to enable the translucent prompt layer in JavaScript Animation This article mainly introduces how to enable the translucent prompt layer in JavaScript animation. It involves related techniques related to javascript DOM operations and is very

JQuery label editing plug-in Tagit User Guide The tagit plug-in of jQuery works well. This plug-in is used today. The following describes the specific usage of this plug-in detail. We recommend it to you here. If you need it, you can refer to it. I.

JQuery background plug-in backstretch User Guide Backstretch is a simple jQuery plug-in that can help you add a dynamic background image to the webpage and automatically adjust the size to adapt to the screen size, of course, the disadvantage of

JS is perfectly compatible with the scrolltop methods of various browsers 1. Differences of scrollTop in different browsers IE6/0/6/7/8/9/10: For pages without doctype declaration, you can use document. body. scrollTop to obtain the scrollTop height;