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New PromiseNew Promise (function function reject) resolver), PromiseCreate a new promise, passing in a function that has two functions resolve, reject as arguments. These two parameter functions can be called in this function.Example:function

This article mainly introduces how to implement proportional drag and scale of the Selection box in JavaScript, and provides features such as proportional scaling and minimum range setting, it has some reference value for adding, listening to

VaR dragdom = Document. queryselector (". fordrop "),Dropdom = Document. queryselector (". fordrop "); W. addhandler (dragdom, "dragstart", function (e ){E. datatransfer. setdata ("text", "Hello Zodiac ");W. Log ("dragstart ");});W. addhandler

In Jquery, the differences between. bind (),. live (),. delegate () and. on () are described in detail. jquery. bind Introduction Recently, many web developers have many questions about the. bind (). live (). delegate () and. on () methods in jquery.

Reprinted from: http://zhuzhichao.com/2013/12/differences-between-jquery-bind-vs-live/I've seen a lot of developers who are confused about the. bind (),. Live (),. Delegate (), and. On () and their differences in jquery.If you have no patience or

1. Brief introductionIn HTML5 local storage--web SQL database mentions that Web SQL database has actually been deprecated (since Firefox and IE are not supported by now), and HTML5 's supported local storage has actually become a web Storage Storage

Through the HTML file API, Firefox, Chrome and other browsers have supported the direct drag of files from the operating system, and uploaded to the server. This is a revolutionary advance relative to the HTML form that has been used for more than 1

Modern browsers already have a lot of support for drag-and-drop file reads, and their advantages are no longer repeated. Front-end time use drag and drop to improve the site's avatar upload process, the main points and practical experience to do a

Local data persistence improves WEB application accessibility and mobile application responsivenessThe index Database (IndexedDB) API (as part of HTML5) is useful for creating data-intensive offline HTML5 WEB applications that have rich, locally

In the "HT for Web integration openlayers implementation of GIS Map Application" chapter introduces the integration of HT for Web and Openlayers, many friends respond to the domestic use of more than Baidu map, although the integration of the

In the "HT for Web integration openlayers implementation of GIS Map Application" chapter introduces the integration of HT for Web and Openlayers, many friends respond to the domestic use of more than Baidu map, although the integration of the

According.html simple folding panel learning CSS is funny an anchor tag can be used inside A collapsible panel tab so that the key board focus ring appears * Inside * the tab instead of around the tab. this is an example of how to

Js achieves drag effect, js implements drag First, let's take a look at the basic rules and problems of object-oriented exercises: First, write a common writing method, and then change it to an object-oriented writing item.Normal method Deformation ·

This article aims to give you a better understanding of js object-oriented information and demonstrate JavaScript object-oriented information through drag-and-drop operations. First, let's take a look at the basic rules and problems of

An event is an action that is performed by the user or by the browser itself. such as click, Load, and mouseover are the names of the events. The function that responds to an event is called an event handler. The name of the event handler begins

HTML5 Mobile Phone development-rolling and inertia easing, html5 rolling inertia easing 1. Scroll There are three implementation methods: 1) use the native css Attribute overflow: scroll content area Notice: If there is a bug in android, it will

A very good javascript class. A very good javascript class. The Code is as follows: /** Author: aoao* Homepage: http://www.loaoao.com* Email: loaoao@gmail.com/QQ: 2222342* Copyright (c) 2006 aoao* Licensed under a Creative Commons Attribution 2.5

In the "HT for Web integration openlayers implementation of GIS Map Application" chapter introduces the integration of HT for Web and Openlayers, many friends respond to the domestic use of more than Baidu map, although the integration of the

This article mainly introduces the detailed explanation of the mini-program framework and related information about the instance application. if you need more information, refer Quickly understand the use of small programs, a todos app developed

This article mainly introduces the detailed explanation of the mini-program framework and the related information of the instance application. if you need more information, refer to the next article to explain the detailed explanation of the