learn vue js

Learn JS, fast two months of time, intermittent look at the point of the foundation. But every time when doing homework feel code like squeeze toothpaste, but listen to the teacher's comments smattering after the new knowledge points have problems. ButWell, it's good to get into something useful.Unconsciously learned to do the project, and later found that the code is more cumbersome, the most annoying is t

Learn Node.jsnode: From the browser run JS, run on the server Chrome-based V8 engine that uses V8 virtual machines to parse and execute JS code To create a simple server: To create a server.js file$ Touch Server.js Loading module HTTP using the Require function Call the Http.createserver () function to create the server Call

One. Write a JS step1, first realize the layout2. In the implementation principle3. Understanding JS SyntaxTwo. js how to get elements1. Get elements by ID namevar variable = document.getelementbyidx_x ("id name");//element: ElementThree. Move an element out of your sight1.display:none; Show None2.visibility:hodden;Hide3. Set Width/height to 04. Transparency is 0

Have to say, in the JS aspect, oneself really is a genuine rookie. For JS and some JS framework such as jquery JS frame, oneself is just in the stage of simple application, of course, oneself also in continuous learning, hope in the future can share with you more JS experien

headerRes.writehead ($, {"Content-type": Fungetcontenttype (FilePath)});7980//Create read-only stream for returnBayi var stream = Libfs.createreadstream (FilePath, {flags: "R", Encoding:null});8283//Specify 404 error if stream read errorStream.on ("Error", function () {Res.writehead (404);Res.end ("87});8889//Connect file stream and HTTP return stream for the pipeline to return the actual web contentStream.pipe (RES);91}A. else {//file does not exist9394//Return 404 errorRes.writehead (404, {"C

default, the import statement does not use curly braces.importand export commands can only be on the top level of the module, not within the code block. Otherwise there will be a syntax error.Such a design can improve compiler efficiency, but there is no way to implement runtime loading.Because require is run-time loaded, the import command has no way to replace the Require dynamic load feature.So the import () function is introduced. completes the dynamic load.Import (specifier)The specifier i

It is an important concept of Javascript to let you learn about JS closure every minute. For Beginners, closure is a very abstract concept, especially the definition given by ECMA specifications. If you have no practical experience, it is difficult to understand it by definition. Therefore, this article will not describe the concept of closure in a large space, and let you

Original: "Gold Map API" from scratch to learn the German JS API (ii) Map control and plug-in-ranging, circular editor, mouse tools, map type switch, eagle eye fish BoneAbsrtact: Whether it is a control or plug-in, is based on a first-level API interface, the development of two, encapsulated a series of more convenient for developers to use, reduce the developer workload of the level two API interface. In a

Window global object and points this variable to the Obj object, where the global variable JView references obj. The function in the Obj object also references the variable viewport in function f, so the viewport in function f is not recycled by GC and viewport is kept in memory, so this writing satisfies the condition of the closure.4, the Simple summary languageThis is the simplest understanding of closures, of course, the closure has its deeper understanding, this involves more, you need to

JS magic Hall: learn more about instanceofI. Breif we all know that instanceof is generally used to check whether the object A is an instance of Class B or A subclass. The problem is that JS does not have the concept of class, nor does it have the concept of class inheritance (although there are constructors). So how does instanceof determine that object A is a B

: ' CourseID ', TextField: ' Coursename ', method: ' Get ', Onloadsuccess:onloadsuccess, Onselect:function (REC) {//Check the exam name according to the course ID $.get ('/examine E/queryexambycourseid ', { ' CourseID ': rec. CourseID, ' OrganizationName ': Encollege}, function (data) {Examname.combobox ("clear"). ComboBox (' LoadData ') , data); Classname.combobox ("clear"); }, ' json '); } }); Test name var examname = $ (' #ExamName '). ComboBox ({valuefi

Every day, Bootstrap is a required js plug-in. Bootstrap comes with 12 jQuery plug-ins. With extended functions, you can add more interactions to the site. If you are interested, refer 1. Bootstrap plug-in overview The components discussed in the previous layout components section are just the beginning. Bootstrap comes with 12 jQuery plug-ins, which provide extended functions to add more interactions to the site. Even if you are not a senior JavaScr

The daily required Tab plug-in of Bootstrap. You can use this plug-in to place the content on a Tab, capsule Tab, or even a drop-down menu Tab, if you are interested, you can refer to tabs. By combining some data attributes, you can easily create a Tab page. "If you want to independently reference the plug-in function, you need to reference tab. js. Alternatively, as mentioned in the Bootstrap plug-in overview chapter, you can reference bootstrap.

= function (e) {this.momove (E)}.bind (this); This.moveTarget.onmouseup = function (e) {This.moup (E)}.bind (this); } Description:modown response to the left mouse button press operation, momove response to Mouse movement operation, moup response to mouse lift operation. In the momove added E.which judgment, E.which ==1 said the left mouse button press, this is to solve, the mouse can be dragged outside the range, and then moved back, without pressing the left button, drag elements will

by one. Applyif (O, C) extends non-undefined members in Object C to O. Addbehaviors (o) ID () to generate a unique object ID, ExtendExtended functions, that is, type inheritance. This is a crucial member, and the type derivation in the entire framework is inseparable from its support. The $ of getdom and prototype is the same. Type Removenode Destroy Num Callback Combine Each Urldecode Urlencode JS b

If you have the basis of Java, Learning JS is particularly easy, remember more than three, do more things, more internet search information, think more. JS and Chess is a truth. To achieve the final result, it is important to pay attention to each method, the use of each event, not to say you know how to use every thing, but to understand each event, each method has a link between.

and setting its properties to be non-configurable, you can also set all of its own data properties to read-only (if the accessor property of an object has setter methods, accessor properties are unaffected and can still be called by assigning values to the property). Use Object.isfrozen () to detect whether an object is frozen.Object.preventextensions (), Object.seal (), and Object.freeze () all return incoming objects, that is, they can be called by means of nested functions:Creates a closed o

I often use form validation at work, in the current company to do forms validation with the angular form component, for a pursuit of the front end, or application on the mobile side to write a form verification, the introduction of angular or jquery components, such as verification, will inevitably appear bloated, Preferably a native JS bar, light weight. Fortunately, until this lesson, plus the previous learning, slowly merge according to the require

property represents the function that created the object. Object.constructor//object is the name of the object or function. Description: The constructor property is a member of all objects that have prototype. They include all JScript intrinsic objects except the Global and Math objects. The constructor property holds a reference to a function that constructs a particular object instance. Example: X= newString ("Hi"); if (X.constructor== String)//processing (the condition is true). or function

and B are recycled by GC. (The garbage collection mechanism of Javascript will be described in detail later) 3. microview of the world in the closure To learn more about closures and the relationship between function a and nested function B, we need to introduce several other concepts: the function execution environment (excution context), and the activity object (call object) scope and scope chain ). The process from definition to execution of funct