function apply

First, the causeThat day to Prototype.js opened to see, only to see a few lines on the full head fog, the reason is not very familiar with the object-oriented JS, so Baidu +google a handful, finally count small have harvest, write this commemorative

The Set_error_handler () function sets the user-defined error-handling function. This function is used to create the user's own error handling for the Run-time period. The function returns the old error handler, or null if it fails. Let's take a

One, variableThere are two types of values that can be stored in JavaScript variables: Raw values and reference values. The original value is stored in a simple field on the stack, where the value is stored directly in the position indicated by the

In JavaScript, a function is a first-class citizen, a function in JavaScript is a data type, not as a C # or other descriptive language just as a module to use. Functions have four invocation modes: function invocation form, method invocation form,

1.apply definition Apply: Call the function and replace the value of the function with the specified object, replacing the parameters of the function with the specified array.Syntax: Apply ([Thisobj[,argarray]])ThisobjOptional. The object to use as

Perhaps before joining the continuation, it is important to talk about the cost of doing it so much. After all, the results are the same with no continuation calculation. However, this is a series of interests, learning this knowledge should be

The R language provides a bulk processing function that iterates through all or part of the elements within a collection to simplify operations. The bottom of these functions is achieved by C, so efficiency is more efficient than manual.The batch

  This article is mainly to the JavaScript in the self and this usage in a detailed summary of the introduction, the need for friends can come to the reference, I hope to help you. One, the cause that day to Prototype.js opened to see, just to

First, the preface Nodejs used some days, recently reviewed its API, the use of new features, in order to have a higher level of mastery, the summary of the API is different from the simple English version of the Chinese, will do more to expand and

Here are some of my test results Array & Object Constructing When constructing arrays and objects, the new Array () and new object () are 3 times times slower than [] and {} Index Number type for Arrays Numeric index types for arrays Ist[int (0

① application to open shake and shake function Apply for the opening of a shake around the function. After the request is successfully submitted, the employee completes the audit within three working days. If the audit does not pass, you can

[Function].call (Obj,param1,param2,....)Let the current scope of function [functions] become obj, that is, the this in the function becomes this obj, and the function receives several specified parameters of the Obj object.[Function].apply

When we write a program, there will inevitably be problems (often problems), and when PHP encounters an error, it gives the location of the error script, the number of rows, and the reason. A lot of people say it's not a big deal. Indeed, during the

Java8 Full InterpretationJava8 Full InterpretationObjectiveSome new features of JAVA81. Why use JAVA8?1.1 First thought of the logic should be as follows1.2 Use policy mode to solve this problem1.3 Using policy mode and internal classes to solve

Multi-process typical cases:1, the process name of the child process as an element in the list, in the parent process traversal (asynchronous) execution#Coding:utf-8 fromMultiprocessingImportPoolImportOS, time, Random#Package A function as an

Read a topic "Use object-oriented JavaScript to introduce yourself", and then think it's fun, so write the following code.Helperfunction extend (SUP, overrides) {var sub = overrides && Overrides.constructor | | function () {sup.apply (th is,

Objective Recently has been playing angularjs, have to say, compared to knockout,angularjs this MVVM framework is more powerful, and more complex, various tutorials online everywhere, but the real use of the project will encounter a variety of pits.

JavaScript is a literal translation script language, a dynamic type, a weak type, a prototype based language, and a built-in support type. Its interpreter, known as the JavaScript engine, is widely used as a scripting language for clients, and is

Angularjs $scope inside the $watch (), $digest () and $apply () are the core functions of ANGULARJS, learning Angularjs must understand these functions. When you bind a variable in $scope to view, Angularjs automatically creates a "Watch" inside it.

Apply, call In JavaScript, call and apply are meant to change the context in which a function is run, in other words, to change the direction of this inside the function body. One of the big features of JavaScript is that the function has the