Programming VIP

preface Array is one of the common data types in JavaScript. I'll make a brief record and summary about its operation methods here. This paper mainly includes: Create array Determine whether it is an array Class array and array conversion Array de duplication You can choose to eat according to your own needs. Create array Creating an array i ...

The home page is divided into three sections: 1 Rotation chart 2 Virtual live broadcast section 3 Recommended content section Element is required to implement the content of the home page Carousel lantern (rotating picture) and Card (recommended content) components in UI. The function of the rotation chart is to click to jump to the officia ...

1, What are instructions The essence of instructions is HTML custom attributes. HTML has two kinds of attributes, one is inherent attribute and the other is user-defined attribute. Inherent attributes refer to the attributes that support the functions of HTML, such as id, class and title. Custom attributes are usually used to store some data ...

Chapter 1 - EL expression 1.1 EL expression overview What is an El expression Expression Language: Expression Language, jsp2 Built in JSP after 0 Purpose: in order to make the JSP easier to write, the value (the value stored in the domain object) is simpler. (instead of script <%% >) EL syntax ${el expression} Purpose of EL express ...

brief introductionFrom the birth reason of HTML Entry - > principle description - > practical application - > source code analysis, I will take you to analyze the HTML Entry framework in an all-round way.prefaceThe word HTML Entry may be unfamiliar to you. After all, what is HTML Entry on google? Can't find the right results. But if yo ...

There are two storage methods in H5 1,window.sessionStorage session storage: Save in memory. The lifecycle is to close the browser window. That is, the data is destroyed when the window is closed. Data can be shared in the same window. 2,window.localStorage local storage: It may be saved in the browser memory or on the hard disk. Perm ...

Action inline style Modify the style of elements through JS: Syntax: elements style . Style name = style value Example: box1.style.width = "300px"; Note: if the style name of CSS contains -, This name is illegal in JS, such as background color You need to change the style name to hump naming method, backgroundColor The styles we set through th ...

  1, Foreword The year of the tiger is coming. I give you the blessing of the tiger, the sweetness of the tiger, the luck of the tiger, the health of the tiger, the happiness of the tiger, the mood of the tiger, the comfort of the tiger, the success of the tiger, the happiness of the tiger and the life of the tiger!We send blessings to ...

The project requires the extraction of similar colors in canvas, and the specific requirements will not be introduced. Here we will draw out and write an article separately. In the project, the canvas here is actually a map. In order to demonstrate, there is no need to go on the map. You can directly load a picture with canvas const canvasDom ...

catalogue 1, Three elements of event binding 1.1 # label object 1.2 event type 1.3 event handling function 1.4 event binding syntax form 1.4.1 # grammatical form I 1.4.2} grammatical form II 1.4.3 differences between on syntax and event listening syntax 1.5 event binding syntax compatibility 1.5.1 # standard browser 1.5.2 # lower v ...