The examples in this article describe jQuery-mobile event monitoring and usage. Share it with everyone for your reference, the details are as follows:
Touch event - triggered when the user touches the screen (tap and slide)
Scroll event - triggered when scrolling up and down
Direction event - when the device
Page events triggered when vertical or horizontal rotation - Triggered when the page is displayed, hidden, created, loaded and/or unloaded
1. Initialization event
1. ready event page loading Complete
$(document).ready(function(){ //your code here... });
2. Page loading completion event two pageinit
$(document).on('pageinit','#pageone',function(){ //your code here... });
3. Event format
$(元素).on('事件',funciton(){ //code here... })
2. Touch event
tap The event is triggered when the user taps an element
taphold The event is triggered when the user taps an element and holds it for one second
swipe The event is triggered when the user taps an element The event is triggered when the user slides more than 30px from the left on an element.
swipeleft The event is triggered when the user slides more than 30px from the left on an element.
swiperight The event is triggered when the user slides more than 30px from the right on an element. Trigger
3. Scroll event
scrollstart event is triggered when the user starts to scroll the page
(iOS devices will freeze the DOM operation when the scroll event occurs)
scrollstop event is triggered when the user It is triggered when the scrolling page is stopped
4. Orientation (horizontal and vertical screen rotation)
The orientationchange event is triggered when the user rotates the mobile device vertically or horizontally
Can be passed through window.orientation To detect horizontal and vertical screens
$(window).on("orientationchange",function(){ if(window.orientation == 0) // Portrait { $("p").css({"background-color":"yellow","font-size":"300%"}); } else // Landscape { $("p").css({"background-color":"pink","font-size":"200%"}); } });
5. Page events
Page Initialization - before the page is created, when the page is created , and after page initialization
Page Load/Unload - when an external page loads, unloads, or encounters a failure
Page Transition - before and after a page transition
Page Change - when a page is changed, or When encountering failure
[Initialization event]
pagebeforecreate This event is triggered when the page is about to be initialized and before jQuery Mobile has started enhancing the page.
pagecreate This event is triggered when the page has been created but before the enhancement is completed.
pageinit This event is fired when the page has been initialized and after jQuery Mobile has completed page enhancements.
$(document).on("pagebeforecreate",function(event){})
[Loading event]
pagebeforeload is triggered before any page loading request is made.
pageload Fires after the page has been successfully loaded and inserted into the DOM.
pageloadfailed This event is triggered if the page loading request fails. By default, the "Error Loading Page" message will be displayed.
$(document).on("pageload",function(event,data){})
[Transition Event]
pagebeforeshow is triggered on the "Go" page, before the transition animation starts.
pageshow is triggered on the "to" page, after the transition animation is completed.
pagebeforehide is triggered on the "coming" page, before the transition animation starts.
pagehide is triggered on the "coming" page, after the transition animation is completed.
$(document).on("pagebeforeshow","#pagetwo",function(){ })
For more jQuery-mobile event monitoring and usage details, please pay attention to the PHP Chinese website!
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The future trends of Python and JavaScript include: 1. Python will consolidate its position in the fields of scientific computing and AI, 2. JavaScript will promote the development of web technology, 3. Cross-platform development will become a hot topic, and 4. Performance optimization will be the focus. Both will continue to expand application scenarios in their respective fields and make more breakthroughs in performance.

Both Python and JavaScript's choices in development environments are important. 1) Python's development environment includes PyCharm, JupyterNotebook and Anaconda, which are suitable for data science and rapid prototyping. 2) The development environment of JavaScript includes Node.js, VSCode and Webpack, which are suitable for front-end and back-end development. Choosing the right tools according to project needs can improve development efficiency and project success rate.

Yes, the engine core of JavaScript is written in C. 1) The C language provides efficient performance and underlying control, which is suitable for the development of JavaScript engine. 2) Taking the V8 engine as an example, its core is written in C, combining the efficiency and object-oriented characteristics of C. 3) The working principle of the JavaScript engine includes parsing, compiling and execution, and the C language plays a key role in these processes.

JavaScript is at the heart of modern websites because it enhances the interactivity and dynamicity of web pages. 1) It allows to change content without refreshing the page, 2) manipulate web pages through DOMAPI, 3) support complex interactive effects such as animation and drag-and-drop, 4) optimize performance and best practices to improve user experience.

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.


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