javascript tips

Requirements: Write a class that can be arithmetic, or can be calculated as a rectangular area 1. ProcedureViewcount.html　　　Count.class.phpprintcount.php　　　2. Results Requirements: the arithmetic and area operators into one, the main

Good use of JS in the use of small knowledge, can be very concise writing code1. Use!! Simulate the Boolean () functionPrinciple: When the logical non-operation of a data object, the data object will be converted to a Boolean value, and then take

Google Chrome is not just for surfing the web, it's more like a powerful development aid for developers.工欲善其事 its prerequisite, the next author to share some of the ways Chrome uses.If the reader knows how to add JavaScript breakpoints to Chrome,

I'll introduce and parse 12 simple but powerful JavaScript tricks. All JavaScript programmers can use them right away, and you don't need to be a JavaScript guru to understand this. If you're still a beginner, and you've read all of these tips and

Focus: http://www.javascriptkit.com/Create an object:var car = new Object ();Car.colour = ' red ';Car.wheels = 4;Car.hubcaps = ' spinning ';Car.age = 4;The same can acchieved with:var car = {Colour: ' Red ',Wheels:4,Hubcaps: ' Spinning ',Age:4}Note:

　　 1. Delete the trailing elements of an arrayA simple way to clear or delete the trailing elements of an array is to change the value of the length property of the array.Const ARR = [11, 22, 33, 44, 55, 66];TruncantingArr.length =

Feature detection rather than browser detectionBecause a browser does not support a particular feature, it is often our practice to make browser judgments directly in the code such as: Huangmei County Primary School 1 if(Broswer.

Original link: https://davidwalsh.name/combining-js-arraysLink to original translation: http://www.ituring.com.cn/article/497290This is a short article about JavaScript technology. We will talk about the different strategies for combining/merging

Javascript| Tips Eighth episode How to automatically add the last modification time After we have finished the HTML file, we usually add the date of the last modification of a line of files. Now you don't have to worry about every time you have to

Javascript| Tips The following is the result of our production of the source program of the lantern effect here goes your cool P age! In this program we use the same function (or part) settimeout (...)

Javascript| Tips How to add a date to the page in the second episode We want to tell you an example of the use of dates and times, from your personal client machine to get the date and time.The procedure is as follows: In this case, we must first

Javascript| Tips Recently do a small project in the company, need to do a multiple-select items Delete function, so write the following JS script examples to achieve, in fact, is often used to compare the basis of things, the master will not have to

Javascript| Tips Next we're going to introduce you to a function that can generate chaos, and this function, written in JavaScript, just takes advantage of a little trick. This technique, in most compilers (compiler), calculates chaos in most cases (

Javascript| Tips Seventh episode how to generate Chaos number Next we're going to introduce you to a function that can generate chaos, and this function, written in JavaScript, just takes advantage of a little trick. This technique, in most

Javascript| Tips Inserts the text that contains the cursor Press ENTER to submit Change the status of TD Click Before Determine if check box is selected R1R2R3C1C2c3C4c5 Take the value of input Select All How to get the number of TD

1. Iterate through the properties of an object obj to an array.var a = []; for inch window); Console.log (a); // output All properties of the Window object into array a2. Class array objects are different from real array objects, so it is often

This article mainly introduces JavaScript code for implementing sliding menu effects by clicking the mouse in the upper left corner. It involves JavaScript tips for dynamically changing page element styles Based on mouse events and has some

The digitized date JS, date is a built-in data type, although the direct output of the date format for people to read, but for the machine program is a bit inconvenient:var now=New Date (); Console.log (now); // Wed Nov 22:02:17 gmt+0800

This article mainly introduces how to implement a date selector accurate to seconds in JavaScript. It analyzes the implementation steps and related techniques of a JavaScript date selector in the form of a complete example, involving the related

The following is a summary of common methods for JavaScriptString objects. I think it is quite good. Now I want to share it with you. It is immutable to make a reference string for you. The string method does not change the content of the original