JavaScript

In all operations, there is a sequence of operations. When I was a child, when we learned arithmetic, we all knew a rule: first multiplication and then minus, parentheses are the braces!Similarly, in JavaScript, the operator's precedence is shown in

Definition of array array　　　1. Array literals (direct volume)var arr = [1, 2, 3];　　　　2. Using constructorsNew Array (Length/content)var arr = new Array (1,2,3,4); arr = [1,2,3,4] If only one argument is passed, the length of the array is represented.

1. varvar is well known for defining variables such as Undefined,number,string,bool,array,function,object,null.But sometimes for the sake of convenience, there are some memory leaks:function Fun () {var a=b=1;//for immediate assignment}Fun

Vue2.0 better-scroll sample code for moving terminals, Preface: In the previous article, the sliding effect was achieved. Let's try the implementation method of the left-right linkage effect. Effect: When sliding to the right side, the left side can

Vue introduces the new vue-awesome-swiper plug-in, This article introduces the new version of vue-awesome-swiper and shares it with you as follows: Problem Why is the pagination dot of my vue-awesome-swiper component not displayed? Why does my

Example of how native JS achieves a rebound effect of multiple small ball collisions, js example This article describes how native JS achieves the bounce effect of multiple small ball collisions. We will share this with you for your reference. The

Add Baidu statistics code to a single-page vue application (for test purposes) and vue code In this way, the ingress file is inserted globally, and each page is available. This involves a problem, Vue. the js Project is a single-page application.

Analysis of simultaneous motion implementation methods and JS Special Effects This article describes how to implement simultaneous motion of JS motion effects. We will share this with you for your reference. The details are as follows: Next, the

Perfectly solves the problem that the off-canvas side slide of the mui frame cannot be rolled out when the excess part is hidden. muioff-canvas One disadvantage of the off-canvas slide in the mui frame is that the scroll bar cannot appear, because

Using js to dynamically add option options to datalist or select, datalistoption Sometimes you need to read information from the configuration file and add it to the user's selection items, such as the select option. The following provides an

Compress images by using applets In the initial stage, the little program of Brother Xiaolong is equivalent to 6 in the IE field. Here we will tell you a glimpse of the past. Photo API. Wx. chooseImage ({count: 1, // default 9 sizeType: ['original',

CSS basics-use position: sticky to implement sticky LayoutIntroduction I have previously written an article to explain several common attributes of position: Explanation of position of CSS attributesWe generally know the following common

AngularJS listens to two methods after ng-repeat rendering is completed, angularjsng-repeat This article describes two ways for AngularJS to listen for ng-repeat rendering. We will share this with you for your reference. The details are as

JS deletes an element method in an array. js deletes an array element. Deletes an element specified by an array. First, you can define a function for the JS array object to find the location of the specified Element in the array, that is, the index.

Click link a in jquery. After the jump, the background color is displayed at the link. This problem occurs during project creation. It is reasonable to say that this low-level problem should not occur as long as the template is set. Then I didn't

Use express + multer to implement the image upload function in node. The following describes how to use express + multer to upload images in node. The specific content is as follows: In the front-end, we use ajax to asynchronously upload images, use

Commonly used color hexadecimal code for webpage design, and hexadecimal code for Webpage Design When designing and creating a website webpage, you often need to use different colors for matching and effects. If the color on the webpage is better,

SpringBoot + Vue is separated from the frontend and backend, and SpringSecurity is used to solve the permission problem perfectly, Currently, when the backend is separated, the handling of permission issues is slightly different from our traditional

Web Front-end vue filter, web Front-end vuefilter Vue filters are usually used in some common Text Formatting. Filters can be used in two places: Double curly brackets interpolation and v-bind expressions. For example, the Chinese character "￥" is

In vue, axios asynchronously uses the echarts method, axiosecharts In actual work, data cannot be written to death as demonstrated in the previous demo. all data should be obtained by sending a request. Therefore, in this article, I will use Echarts