javascript promises tutorial

This article ish5eduAgency officialHTML5 Trainingtutorials, the main introduction:JavaScript Intensive Tutorials--Object value passing and reference passingFunctionsetname (obj) {obj.name= "Tom";//Before execution, the Name property of obj and person at this time is undefinedobj1=new Object (); obj1=obj;//declares a global object, then obj, obj1, and person should be the same object at this time }//setname function is executed, the Obj object is destroyed and the remaining objects are still pres

javascript| Tutorial Using JavaScript in HoTMetaL 2. How to add a button to the menu barThere are several ways to run JavaScript macros. The first approach is to link the button of the toolbar to the macro and add the button to the HoTMetaL user interface, as we've already said in the previous section. The first metho

javascript| Tutorial Use JavaScript to produce mouse-move-past pop-up windows This tutorial describes the design of a window that pops up when you move the mouse over the picture. This pop-up window is a standard page and you can set it to size. First, add the following code to the Header tab of the page: So how d

";break;case5:x="Todayit'sFriday";break;case6:x="Todayit'sSaturday";break;} X running result: Todayit'sSaturday Default keyword Use the default keyword to specify what to do when the match does not exist: Instance If today is not Saturday or Sunday, the default message will be output: varday=newDate().getDay();switch(day){case6:x="Todayit'sSaturday";break;case0:x="Todayit'sSunday";break;default:x="LookingforwardtotheWeekend";} Running result of x Todayit'sSaturday The above is the content of the

JavaScript: Pay attention to the test method of the RegExp object in JavaScript. Javascript tutorial The RegExp object in javascript is used for operations related to regular expressions. This object provides a method test to determine whether a string meets a certain patter

Timing of JavaScript advanced tutorial (lesson 3) events and browser recognition With the increasingly rich JavaScript, we can develop more and more complex applications. In the last course, we learned how to use JavaScripts to write Cookies. Today we will learn how to add the timing function. The time-based timing function is very useful in browsers, and can

HTML Dom tutorial 49-javascript number object In JavaScript, numbers are a basic data type. Javascript supports the number object, which is the packaging object of the original value. When necessary, JavaScript will automatically convert between the original data an

" (x==y) in the strict comparison operation,=== is the identity of the operator, while checking the expression value and type, the following if conditional statements return false:var x=10;vary=;if (x===y) This error often appears in the switch statement, The switch statement is compared using the identity calculation character (= = =): The following instance executes alert popup: Varx=10;switch (x) { case10:alert ("Hello");} The following instances do not execute because of type inconsistency a

viewing CPU execution time and memory consumption:This is not familiar, do not say more, or please refer to the end of the link.Audits label pageThis is useful for optimizing front-end pages and speeding up page loading (quite with YSlow):Click the Run button, you can start analyzing the page, you can see the analysis results are finished:It can even analyze what CSS is not being used in the style sheet on the page:Console tab pageIs the JavaScript c

PhantomJS quick start tutorial (WebKit for JavaScript APIs on the server side) and phantomjswebkit PhantomJS is a WebKit-based server-side JavaScript API. It fully supports the web without the support of the browser. It is fast and native supports various Web standards: DOM processing, CSS selector, JSON, Canvas, and SVG. PhantomJS can be used for page automation

How to dynamically load events in the Javascript tutorial This article mainly gives a detailed summary of several methods for loading events in js. If you need it, please refer to it and hope to help you. Some methods to dynamically load javascript events sometimes We often need to dynamically add events in JS, which involves browser compatibility issues. The fo

primarily performance-optimized, including viewing CPU execution time and memory consumption:This is not familiar, do not say more, or please refer to the end of the link.Audits label pageThis is useful for optimizing front-end pages and speeding up page loading (quite with YSlow):Click the Run button, you can start analyzing the page, you can see the analysis results are finished:It can even analyze what CSS is not being used in the style sheet on the page:Console tab pageIs the

This article mainly introduces the use of JavaScript to achieve page redirection function of the tutorial, is the basic knowledge of JS learning, the need for friends can refer to the What is page redirection? When you click on a URL to access a page x, but inside you are directed to another page y, just because of page redirection. The idea is to refresh from a different

Cgi|javascript|js| Tutorial uses JavaScript instead of CGI You might be familiar with CGI scripts, and you can use CGI to pass numbers or variables from one page to another on a form. Of course, you can use "POST" to pass a variable to a separate thread without appearing in the browser, or to encode the variable to a URL using "get".

JavaScript For statement Use instance Tutorial The number of times specified to execute the same code block in JavaScript or the specified condition is true. ExampleFor loopHow to write a link. The number of times that the same code block is run by the closed loop used. HTML title by loopingHow to use the loop loop through different HTML headings.

javascript| Tutorial Using OLE Automation in JavaScriptIn the previous tutorial we have mentioned OLE Automation in JavaScript. In the tutorials in this section, we'll discuss how JavaScript leverages the power of automation to extend server-side scripting.In fact,

This article mainly shares the learning notes on JS plug-in rolling listening in the Bootstrap tutorial. The content is very detailed. Interested friends can refer to this article to learn about the JavaScript plug-in-rolling listening. 1. Case studies The scroll listening plug-in can automatically update the corresponding navigation tag based on the position of the scroll bar. You can scroll through this

JavaScript reinforcement tutorial-Introduction to object Creation Mode This article mainly introduces the next article on Object creation mode. using various techniques, you can greatly avoid errors or write very simple code. Mode: function syntax sugar Function syntax sugar is an extension to quickly add a method (function) to an object. This mainly utilizes the prototype feature and the code is relativ

Main introduction: JavaScript reinforcement tutorial-jQuery animation-animate () method jQueryanimate () method is used to create a custom animation. JQuery animation-animate () method The jQuery animate () method is used to create custom animations. Syntax: $(selector).animate({params},speed,callback); The required params parameter defines the CSS attributes of the animation.The optional speed parameter

splice (X,N);SUBSTR (n) nth character 3.charCodeAt (n) output from Nth to last 2.charAt (n) output string nth character encoding example checking the number of occurrences of a character x characters 4.join (n) implements a character array into a stringInsert N5.split between two elements ("cut by a character in a string"); Implements a string to be converted into a character array. 6.sort () sorts the array of characters in alphabetical order, returns the array 7.reverse () reverses the sort 8