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Encapsulating custom plug-in Libraries Define a component Is a single file component Loading.vue Registration component import Loading from './components/Loading.vue' export const loading = { install () { Vue.component( 'Loading', Loading) } } Use components import Loading from './xxx/loading/i ...

I. The difference between let and var 1. Regarding variable promotion, var can raise variables, let can't. // For var, as shown below console.log(a); //Output undefined, which is variable escalation var a = 2; console.log(a); //2 //Equivalent to the following code var a; //Declare and initialize to undefined console.log ...

Write it first: Sticky Footer is a layout scenario for css. The footer footer is always fixed at the bottom of the page. When the content of the page is not long enough, the footer sticks to the bottom of the window. When the content is long enough, it will be moved downward. Because the content of the old portal is too short, the copyright f ...

Enhancement with CSS3 Skip text gradient /* This code achieves the gradient effect when the mouse slides over the link */ a { color: #007c21; transition: color .4s ease; } a:hover { color: #00bf32; } Create rounded corners for elements Using CSS3, you can create rounded corners for most elements (including form elements, images, and ev ...

1. Preface, read a lot of wheel seeder code; but in mind, always think about whether there is a simple way to achieve the same effect. Search this (the link below), bright in front of you, then start to practice improvement. The main work, or the first paragraph of the article, "if there is a picture in the middle interval, then in the exe ...

Combining the previous two analyses Wechat Embedded Video 1 (Case Analysis)https://segmentfault.com/a/11...From AnimateCC to CreateJShttps://segmentfault.com/a/11... This time it's a demo that createjs completes UI with inline video Because we forgot the original address, we can only demo for ourselves to run a simple effect. You need to simpl ...

Front-end modularization Families concerned about the development of front-end technology are certainly familiar with the term modular development. With more and more complex front-end projects and more code, modularization has become an inevitable trend. Various standards Because javascript itself does not set standards (of course, es6 already ...

What is an iterator Each value in a circular array or object has already provided an iterator natively in js. var arr = [1, 2, 3] arr.forEach(function (item) { console.log(item) }) Implementing an iterator var iterator = function (arr, cb) { for (let i = 0; i < arr.length; i++) { cb.call(arr[i], arr[i], i) } } var cb = function (ite ...

pandas ExcelWriter customized format (customized header, rendering color, etc., non-ExcelWriter standard creation mode) Excel Writer plug-in has a pit that the format that has been set can not be changed. Therefore, when converting from pandas to excel, the format must be cleared, especially the format of the header. The code is as follows: i ...

Today's edition will share with you an article about the pit encountered when nodejs synchronous invocation acquires mysql data. It is very comprehensive and meticulous. It has a certain reference value. Friends who need it can refer to and learn from it. If there are any shortcomings, criticism and correction are welcome. mysql calls to get d ...