DOCTYPE HTML>HTMLLang= "en">Head>MetaCharSet= "UTF-8">title>Implementing a chained invocation of jquerytitle>Head>Body>Script>functionA () {}a.prototype.v= 2; A.prototype.set= function(num) { This. V=num;return This; Returning the called object will continue to invoke the methods and objects inside the object, i.e. chained calls to}a.prototype.get= function() {alert ( This. v);return This;}varB= NewA (); B.get (). Set (6). get ();Script>Body>HTML>Chaining
2018-1-11 20:25:48 ThursdayScene:Previously wanted to chain call must first new an object, and then $obj->aa ()->bb () ...Now the static method of PHP7 (php7.0.13 php7.2 test pass) can also be chained to call theWriting:A::aa ():: BB ():: CC ();Realize:1 classA2 {3 Public Static $a= 0;4 5 Public Static functionAA ()6 {7Self::$a++;8 returnSelf::class;9 }Ten One Public Static functionBB () A { -Self::$a++; - returnSelf::class; the } - -
throwing another exception without losing the original exception.The following code implements an exception chain up-throws an exception in two ways. Public classNevercaught {Static voidF ()throwsexceptionb{Throw NewEXCEPTIONB ("Exception B"); } Static voidG ()throwsExceptionc {Try{f (); } Catch(exceptionb e) {exceptionc C=NewExceptionc ("Exception a"); //Exception ChainC.initcause (e); //another way to achieve this//throw new Exception ("Exception a", e); ThrowC; } } Pu
Read the study notes in Chapter 2nd of JavaScript advanced programming (version 6th. The prototype has a problem in the reference type:
Function supertype () {} supertype. prototype. color = ['red', 'Blue ', 'green']; var instance1 = new supertype (); instance1.color. push ('black'); var instance2 = new supertype (); console. log (instance2.color );
The prototype attribute of the reference type is shared by all instances. Prototype chaining in the i
") takes this type of call, at this point, this points to the window, in the browser environmentIn addition, look at the implementation of chained calls in Java, C #, basically the same principle, the same is the use of this, however, in Java, C #, this represents the current object, and in JavaScript, this is determined by the runtime, not determined by the definition.Roughly that is, in each method body, return this, method return value type is the current class type, you can implement this fu
varA=function(){ This. foo= ' Bar ';} A.prototype={b:1};varAa=function() {}aa.prototype={c:2 , __proto__:a.prototype};varAaa=function() {}aaa.prototype={c:3,d:4 , __proto__:aa.prototype};console.log (NewA ()); Console.log (NewAA ()); Console.log (NewAAA ());It can be found that the objects produced by new AAA () inherit all the properties of the AA class and Class A.Because IE's __proto__ is uncontrollable, Firefox and Chrome only support it. A type of JavaScript
# this are to show what you are to execute a series of commands in one strike.$ clear; CD/; Ls-l; echo "You is in $PWD"; echo "Time to go home"; CD ~;# Use semi colon between command.# There is also command lists, which are for a different logic# # Double ampersand means anding, double pipe means ORING; When using if only when the first command exits 0 (successful), the later command would be proceeded; When using | |, if the first command exits none of zero (not successful), the later command
Public class extends Fruit {} class fruit{ public Fruit (String name) { System.out.println ("Fruit's constructor is Invoked ");} }This piece of code seems to be no problem, after compiling the error isBecause Apple does not explicitly define a construction method, Apple's default construction method is called because Apple is a subclass of fruit, and the first sentence of the Apple implicit constructor executes super (), and then calls the constructor of fruit. However, the fruit c
The key is to set the prototype attribute of classb to the instance of classa.
Function Classb (color ){ This . Color = Color; This . Saycolor = Function () {Console. Log ( This . Color );}} Function Classa (name ){ This . Name = Name;
Description
There is a tree with a number of N, the root of point 1, and the tree point has edge rights. Then there are M operations, divided into three kinds: Operation 1: Increase the point of a node x by a. Action 2: Add a to the point in a
If you use a prototype to redefine the classes in the previous example, they will become in the following form:
Copy codeThe Code is as follows: function ClassA (){
}
ClassA. prototype. color = "blue ";ClassA. prototype. sayColor = function
First, JQuery stop animationThe JQuery Stop () method is used to stop animations or effects before they are finished.The Stop () method applies to all JQuery effect functions, including sliding, fading, and custom animations.$ (selector). Stop
If you redefine the classes in the previous example in a prototype way, they will change to the following form:
Copy Code code as follows:
function ClassA () {
}
ClassA.prototype.color = "Blue";ClassA.prototype.sayColor =
to a large monitor than two working simultaneously. The Mac notebook also offers a "close-cover Mode": The feature introduced from PowerBook G4 can be combined with a notebook's own screen, working with an external screen alone (of course, since the notebook is closed, the external keyboard and mouse are required).
After you close the screen of your Mac notebook, you only need to connect an external monitor, a power supply and a mouse keyboard, and the Mac will automatically wake u
The video card is a bridge between the host and the display. After the display signal is processed, the video card must send the signal to the display card through the corresponding interface. The video card interface is used to output the video card.
Video Card interfaces have developed very rapidly in recent years. The development from D-sub and S-video to DVI, hdmi and displayport is just a few years. Now, the video card interfaces on the market ar
FX 1800 is a mid-range product of the tenth generation Quadro
64 GPUs, 192-bit 768 MB gddr3 video memory, bandwidth up to 38.4 Gb/s, FX 1800 provides 30-bit color output (10-bit pixels), FX 1800 does not support SDI and SLI.
FX 1800 uses a PCI-E 2.0 x16 interface, with a maximum power consumption of 1800 W so that it only needs a single slot design, and FX also provides a new generation of output methods: two displayport interfaces and one duallink
MVD206 Six screen Expansion Meter 1. Supports a dual link DVI or Displayport input with a maximum input clock frequency of 330Mhz.2. Output interface supports Dvi-i VGA and DVI output3. Flexible output Mode 2x1,3x1,4x1,5x1,6x1,2x2,2x3,1x2,1x3,1x4,1x5,1x6,3x24. Adaptive equalization Technology at 330MHZ, DVI maximum support 20 meters, Displayport can support 15 meters of transmission distance5.Dual Link DVI
With the new Mac Mini and Apple TV with the HDMI interface, we can connect it to a flat-screen TV with a 1920*1080 resolution display. With wireless mouse keyboard/remote control can be easy to surf the internet and watch video. But the other Mac does not provide HDMI interface, what is the good? This article describes a way to comfortably display a Mac on a flat-panel TV using a rotary connector and other accessories.
The solutions described in this paper use the following products and accesso
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.