what use strict

function definitions and calls Define functions, in JavaScript, to define functions in the following ways: function ABS (x) { if (x >=0) {return x; } else{ return-x } } The above ABS () function is defined as follows: function

Modern front-end development can not be separated from packaging tools, to Webpack as the representative of the packaging tool has become the daily development of the necessary tools to react technology stack, for example, we ES6 the form of source

The WebSocket agreement is detailed For the WebSocket agreement, please refer to the other articles. WebSocket keywords HTML5 protocol, real-time, Full-duplex communication, long connection The benefits of WebSocket than traditional HTTP

Scope:Scope Chain:Child scopes can access the variables and methods of the parent scope. The parent set has no access to the variables and methods of the subset scopeVariable declaration elevation:JS execution will be divided into two stages: (JS

In the study of Liaoche predecessors of the JavaScript tutorial, encountered some points needing attention, so as a study notes listed, remind yourself to notice!If you have the need, welcome to visit the previous blog https://www.liaoxuefeng.com/

What is strict mode?Make JS code more standardized mode, eliminate some unreasonable and less rigorous of JavaScript syntax, reduce some strange behaviorHow to use?Add the following string directly, this syntax can be backwards compatible, if the

Look at the following object definition: ' Use strict ' var jane = { name: ' Jane ', display:function () { retrun ' person named ' + this.name; } }; This will normally call Jane.display (); The following call

Today, just have a demand, that is, I want to use JS to write algorithms or their own learning JS functions and other knowledge, hope that the program can be written directly debugging, and not every time to use the browser to resolve, so

For AngularJS's idea of requesting Web API resources, angularjsapi   The page section is roughly as follows:   ... ...   ProductManagement is the name of the page module. The content of the page can be viewed on the

In js, the context of this is always unpredictable. In many cases, bugs are always confused. In fact, it is okay to know how to execute it in different situations. Global execution First, let's look at what this is in the global environment: First.

Recent project comparison busy, day to go to work, evening back also need to do angular knowledge point ppt to colleagues, after all, the end of the resignation, the project follow-up development or need someone to take over, so it occupies the

ECMAScript5 introduces strict mode into Javascript to allow developers to select a "better" Javascript version, this version can be used in different ways to handle common and notorious errors. At the beginning, I was skeptical about the mode

Redux very difficult to understand, finally understand a little, do a small demo, record.First look at the directory structure:Src|--index.js|--actions|--index.js|--components|--additem.js|--app.js|--itemlist.js|--reducers|--index.jsFinal effect650)

Dual roleThe core object of the BOM is window, which represents an instance of the browser. In the browser, the Window object has a dual role, which is both an interface for accessing the browser window through JavaScript, and the global object

Strict mode (StrictMode) is a new feature of ECMAScript5. Currently, the latest versions of all mainstream browsers, including IE10 and Opera12, support strict mode. If you are interested, please understand, I hope this article will help you. Strict

This article mainly introduces how to solve the famous Schwartzian conversion problem in Perl. This article describes the ordering problem involved in the Schwartzian conversion and provides the implementation code, if you need a conversion, refer

IntroductionGrunt is a tool for building a task-based JavaScript worldMocha is a rich-character JavaScript testing framework that can be run in node. js and in the browser, making asynchronous testing simpler and more interesting. Mocha can run

Document directory MySciprt. pl (an example using MyModule) Zz from http://fanqiang.chinaunix.net/program/perl/2005-06-28/3349.shtml   Do you think the module documentation in perl is difficult? Okay, here is the simplest module in the world.

Strict Mode is a new feature of ECMAScript5. Although ECMAScript5 can be backward compatible with ECMAScript3, if strict mode is used, ECMAScript5's ECMAScript3 syntax function "not recommended" will be fully written. If it appears, a row will be

Learn how to use this in JavaScript and how to use javascript. Tip First of all, I know this article is boring. It is nothing more than this in js, and thousands of articles have already written this Part;However, I still want to write an article