throw new error

Async function Test1 () { //throw new Error (' eeeee ') console.log (' test '); return 1; } Async function Test2 () { //throw new Error (' Error2 '); return 2; } Const ASYNCTASKS = [1, 2, 3].map (Async (x) => { if (x = = 2) {

A method that parses an XML string into an XML DOM object. The code is as follows Copy Code function Parsexml (XML) {var xmldom = null;if (typeof domparser!= "undefined") {XMLDOM = (new Domparser ()). parsefromstring

One: The wrong Error object in javascript:Java-like error base class Exception,javascript a base class Error,error object has the following characteristics:pname– A string that represents the type of error pmessage– the actual error messageThe name

The support for xml dom in javasript is similar to any other feature in browser compatibility. Xml dom in IE1. Microsoft provides support through the ActiveX MSXML Library, through:VaR oxmldom = new activexobject ("msxml2.domdocument. 5.0 ") Get an

1. Meaning:Save the state of an object (the quantity of attributes), and obtain it when appropriate.2. programming requirements:Only class objects that implement the serializable interface can be serialized. The serializable interface does not

  Java SDK supports xml dom, which is similar to any other feature in browser compatibility. Xml dom in IE1. Microsoft provides support through the ActiveX MSXML Library, through:VaR oxmldom = new activexobject ("msxml2.domdocument. 5.0 ") Get an

Simulate Enum by shawl. Qiu in Javascript Note:This simulation is simple, but because JS programs are usually very small, basically no data type like Enum is needed... For more information, see shawl. Qiu JavaScript hash table/hashtable

Abstract class Package { Import Flash. display. Sprite; Public Class Initialize Extends Sprite { Public Function Initializes (): void { Createfield (); Createteam ("red "); Createteam ("blue "); Startgame (); } Public Function

13.6.1 statement Block The so-called statement block refers to multiple statements contained in curly brackets. The statement block is an overall execution body, similar to a separate statement. Code example: { A = 1; B = 2; Alert (A + B ); }   13.6.

This article mainly introduces how to use AmplifyJS components to program with JavaScript. The subscription function provided by AmplifyJS is very powerful. For more information, see Functions of event Distribution When adding various interactive

A simple understanding of the encapsulation and inheritance features in JavaScript, javascript features Encapsulation in JavaScriptIn simple terms, encapsulation allows the outside world to only access the common variables and functions of objects,

JQuery caches data-like Map and jquery caches map I recently encountered such a situation at work. Some data is read from the background, but I do not need to display it on the page at the moment. What should I do? -- Cache. Today, I will share with

TypeScript entry-advanced type, typescript entry typeAdvanced Type  Crossover type The cross type is to combine multiple types into a new type. The new type has members of these types, and all the features of these types are their complexes, like

One, JS contains 6 types of data:Primitive type (that is, base type): Number, Boolean, null, Undefined, string, and Object type objects (containing function, array, date, and so on);The difference between = = and = = =:= = attempts to convert data

1. IntroductionInheritance in JS is a very complex topic and is much more complex than any other object-oriented language. In most other object-oriented languages, only one keyword is required to inherit a class. To Inherit public members in JS, a

I. XML DOM support in IE IE supports XML based on ActiveX MSXML library.1. DOM CreationFor each new version of MSXML, different xml dom objects are created, so try to select a new xml dom version.2. load XMLThere are two types of XML loading:Load

JavaScript and XML (a) browser support for XML DOMThe DOM2 level is the first specification that mentions the dynamic creation of XML DOM concepts. The DOM3 level further enhances the XML DOM.1.dom2 level CoreDocument.implementation.createDocument

 Thread Safety (reproduced) JAVA Reflection Annotation JAVA Persistent Serialization (reprint) 2011-04-19 23:05:30|  Category: JAVA | Tags: serializing person deserialization java FirstName | report | font size big medium small SubscribeTo:

To implement an interface, you must implement all the methods in the interface.function Interface (NAME,FNS) {//declares an interface classTHIS.name = name;This.methods=[];for (Var i=0;iif (typeof fns[i]! = ' string ')throw new Error ("Method name

I. Definition Template method is based on the design pattern of inheritance, which can improve the scalability of the system. Abstract parent class, subclass in JavaThe template method has two parts structure, the first part is abstract parent