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Knowledge points: Native js usually encapsulates the object in the window object prototype, and jquery can also encapsulate the object in $ There are three ways to call the extend method of jquery: Shallow copy $. Extend (obj 1, obj 2) Deep copy $. Extend (true, obj 1, obj 2) After adding the object $. extend({somet ...

Bloggers have been writing about the front-end recently, and the director has come up with a demand for paging data display. I thought about it. Anyway, this thing needs to be used later. How about making it into a component and encapsulating it? Isn't it beautiful after that?? OK, no more nonsense, just go to the code ...

Performance: timer does not refresh, no error information is reported; add debugging information to show timer only executes once; reason: var timer = $.timer (1000, MAIN.show_time,false); //var timer = $.timer (1000, MAIN.show_time(),false); //The above comment is wrong, because when calling the callbac ...

With jQuery, you can easily delete existing HTML elements. Delete element / content To delete elements and content, you can generally use the following two jQuery methods: remove() - delete the selected element (and its children) empty() - remove child elements from selected elements jQuery remove() method The jQuery remove() method deletes th ...

Due to the requirements on the project, you need to export the Excel file with the specified conditions. After a rummage, it finally came true. Now post the code and share it (directly share the code of some auxiliary classes in our project)   Our project uses Asp.Net MVC4.0 mode. Each ActionResult must return a View or Json, etc. (the paramete ...

Cross domain principle of jsonp There is no cross domain limit for < script > tags The difference between json and json json is a text-based way of data exchange, or a format for describing data. var person = { "name": "test", "age": "25", "sex": "male" }; var data = [1, 2, 3, 4, 5]; jsonp is an unofficial cross domain ...

In the daily development of mobile terminal, we usually try the mobile terminal mode of Chrome browser for development and debugging. Only when chrome debugging is completed, can we go to the real machine for testing if there is no problem. This is the big problem of mobile terminal development, Various brands and models of mobile phones, vari ...

Before you can crop a composite picture, you first need to understand canvas and cropper. canvas 1. Create a node first: var c=ocument.createElement("canvas"); and 2. Create a drawing environment for c: var ctx = canvas.getContext("2d"); 3. You can set the width and height: canvas.width=330; canvas.height=440 (see how bi ...

With the end of Jquery knowledge points, I also began to touch the framework. At the beginning, I always hear the words "plug-in" and "framework". I wonder what's the difference between framework and plug-in? "?? There are countless plug-ins. Any function in a web page can be called a plug-in. It can be extracted separa ...

Top Foreword: The previous project used JsPlumb, a drag-and-drop flowchart technology from the Web, which is not really difficult, but it feels good to share some flash-like effects made with HTML in the project. Jsplumb website: https://jsplumbtoolkit.com GitHub: https://github.com/sporritt/jsplumb/ 1. Effect Diagram Display ...