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CycleUsing for 1 * 2 * 3 * ... * 10 The results of a cyclic calculation:' Use strict '; var x = 1; var i; for (i=1;i) {x=x*i;} if (x = = 3628800) { console.log (' 1 x 2 x 3 x ... x = ' + x ' );} Else { console.log (' calculation error ');}View CodeUse loops to iterate through each name in the array and display Hello, xxx! :' Use strict '; var arr = [' Bart ', ' Lisa ', ' Adam '];arr.sort (); // Positive Order // reverse Arr.reverse (); for (var i=0;i) {console.log (' hello,${arr[i]} ')

{padding:0; Margin:0; }. Wrap {width:300px; margin:100px Auto0; } Table {Border-Collapse:collapse; Border-spacing:0; border:1px solid #c0c0c0; width:300px; } th, td {Border:1px solid #d0d0d0; Color: #404060; padding:10px; } th {background-color: #09c; Font:bold 16px"Microsoft Jas Black"; Color: #fff; } TD {Font:14px"Microsoft Jas Black"; } tbody TR {background-color: #f0f0f0; } tbody tr:hover {cursor:pointer; Background-color: #fafafa; }

Ternary operatorsJudging the conditions? (The condition is true when executed): (the condition is false)Contrast memoryvar color= ' Red ';Determine if the color is redif (color=== ' red ') {Console.log (' takeout ');}else {Console.log (' nothing ');}Using ternary operators to implementcolor=== ' Red '? Console.log (' takeout '): Console.log (' nothing ');Note: Complex conditions are not recommended as ternary operators, and it is better to use the IF Else statement directly.Ternary operator--

browser face questions. Includes DOM operations, BOM operations, event bindings, Ajax, and storage for these categories of topics. 6th Chapter Js-web-api (next)explain the specific application of JS in the browser face questions. Includes DOM operations, BOM operations, event bindings, Ajax, and storage for these categories of topics. 7th Chapter Development EnvironmentDuring the interview process, the interviewer may ask questions about the front-end development environment, such as Ide,git, m

Tutorial using OLE Automation in JavaScript 4. How to retrieve an instance of the existence of a automation object JScript supports the GetObject () function in the same Visual Basic. Its general syntax is as follows: var Objvar = GetObject ([pathname][, class]); OBJVAR specifies a variable to hold the reference to the instantiated object. Pathname is the full path and the file name that contains the Ac

Effect Demo: http://www.never-online.net/tutorial/js/upload/ Javascript DHTML Instance Programming (tutorials) (iii), primary instances-uploading file control instances The above chapter basically has to explain the basic knowledge to say some, today finally began to write the code: D First, let's do an example of a batch upload UI control. Examples that are typically done in the future are also dominated

1. What is Dom? What is Dom? Dom is a Document Object Model (Document Object Model), a set of API Interfaces Based on browser programming (in this tutorial, it can be said that it is DHTML programming). W3C introduces the Recommendation Standard, each browser has some subtle differences, with Mozilla's browser closest to the standard. Javascript alone must be combined with Dom to do DHTML programming, in or

Web Front-end performance optimization Tutorial: streamline JavaScript to remove duplicate scripts This is the seventh article in the Web Front-end performance optimization series. It focuses on streamlining Javascript code and removing repeated scripts. For a complete tutorial, see: Web Front-end performance optimiza

This article is the official HTML5 training course for h5edu institutions, mainly introduces: JavaScript intensive Tutorial--basic processing function of arrayArray.push (); add element at the end of the array and return the array to the new length Array.pop (); Delete the last element, decrease the length of the array, and return the last element Array.unshift (); add an element before the array Array.spl

This article is the official HTML5 training course for h5edu institutions, mainly introduces: JavaScript intensive Tutorial--Regular expression backtrackingThe following example shows the process of processing a regular expression:/h (ello|appy) hippo/.test ("Hello there,happy hippo");This regular expression "Hello Hippo" or "Happy Hippo". At the beginning of the matching process, an H is first found, and t

[Web API series tutorial] 3.6-practice: process data (create a JavaScript client) In this section, you will use the HTML, JavaScript, and Knockout. js libraries to create clients for applications. Follow these steps to create a client application:1. display the books list2. display detailed information about the book3. Add a new book The Knockout. js library uses

initial data.Getallbooks ();}; Ko.applybindings (NewViewModel ());In knockout, the observable class enables data binding. When the content of observable changes, observable notifies all data-bound controllers, so they are able to update themselves. (whereas the observable class is a observable array version.) Starting with this, our view model has two observable:1, books Maintain books list.2, error contains errors if the AJAX call failsThe Getallbooks method generates an Ajax call to get the b

I. Handling events (i)Events ( Event ) is the action that the user performs when the page is accessed. Submitting the form and moving the mouse over the image are two events. When a browser detects an event, such as a mouse click or keystroke, it can trigger the JavaScript object associated with the event, which is called the event handler ( EventHandler) or a listener. . 1. Set HTML tag properties as event handlers (avoid use)( 1 ) to directly JS c

Javascript| Tutorials | random | show Use JavaScript to randomly display pictures Sometimes you can see some of the changes displayed on some websites, except that you can use Flash to make Of course, you can also use this section of the tutorial introduced the method to achieve OH. All right, let's start with our creations. We can add the following

Javascript Tutorial: go deep into the PopUp object The company asked me to add the prompt function on an office system. I have studied for a long time and tried many methods. use window. the prompt is displayed on a regular basis, but the customer is impatient to say that the pop-up window is too complicated. so I came up with the CreatePopup () method, but the problem is that since it is an office system,

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

complete javsscript is the following composition:　　　　　　　　　　　　　　　　　　　　　　　　　　One of the ECMAScript is as mentioned above.DOM (Document Object model), whose standards are set by the user.BOM (Browser object model).ECMAScript and DOM have corresponding international standards, and current mainstream browsers already support these standards.However, the BOM does not have international standards, so each browser is handled differently, such as the creation of XMLHttpRequest objects and the acquisitio

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