Programmer Think

In large-scale application development, the page can be divided into many parts. Often different pages have the same parts. For example, there may be the same head navigation. However, if each page is developed independently, it will undoubtedly increase the cost of our development. Therefore, in order to improve code reuse, we will split the r ...

About the screen, pagey, clienty, layery and offsety properties of mouse events screenY The offset of the mouse relative to the upper left corner of the display screen pageY The offset of the mouse relative to the upper left corner of the page (its value is not affected by the scroll bar) This property is not supported under IE9 But you ...

JavaScript Foundation Day 01 1 - Programming Language 1.1 programming Programming: Is to let the computer use a programming language to write program code to solve a problem, and finally get the result. Computer program: It is a series of instructions executed by the computer, and all the programs are written in the language we mas ...

Portal Supplement: prototype, prototype object, object prototype, prototype chain Each constructor has a prototype prototype, which is just an object, so we often call it a prototype object. The role of prototype objects is to share Each instance object also has a property called__ proto__ Or [[prototype]], because it is on the object, it ...

Thank you for meeting. Hello, I'm ken Author: please call me ken Link: Please call me a ken home page link Source: CSDN The copyright belongs to the author. For commercial reprint, please contact the author for authorization, and for non-commercial reprint, please indicate the source. 🌊🌈 About Preface: Some of the contents and picture ...

js learning notes: 1, Data type: (1) Type conversion 1. Implicit conversion 1. Convert numeric + character type to character type console.log(12 + 'character');//string type, output: 12 characters console.log('12' + 1);//Output 121 2. In case of - * / etc., it is generally converted to numerical type console.log('12' - 1);//number t ...

1. Built in objects 1.1 built in objects There are three kinds of objects in JavaScript: custom object, built-in object and browser object The first two objects are the basic content of JS and belong to ECMAScript; The third browser object is unique to JS. JS API explains that built-in objects refer to some objects of JS language. These ...

Idea: Message function: click message - > get nickname and message content - > judge whether the input is empty - > message is successful if there is input- >Leave a message again after 10s         1. Get element {function $(selector) {return document.querySelector(selector)}         ...

preface Next, learn to monitor and launch events, node system events, and so on!! Recommended as usual Official website 1, Introduction Monitor and launch events Event processing is completed in the node (cc.Node). For components, you can register and listen to events by accessing the node this.node. Listening events can be registered ...

New data type symbol S6 introduces a new raw data type Symbol, which represents a unique value. The Symbol value is generated by the Symbol function. That is to say, there are two types of attribute names of objects. One is the original string, and the other is the new Symbol type. All attribute names that belong to Symbol type are unique, wh ...