what use strict

The non-simple parameter is the new parameter syntax in ES6, which includes: 1. Default parameter values, 2. Remaining parameters, 3. Parametric deconstruction. The next step in this article is to ES7 why the use strict directive is forbidden in

---restore content starts---Learning angular time, found a lot of excellent source code, JS files on the top, will be written "use strict"; These characters, search a bit, find a relatively good article, copied over to spare.Original link:

I. Overview In addition to normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict modes). As the name suggests, this pattern allows JavaScript to run under more stringent conditions. The purpose of establishing a

Original address: http://www.ruanyifeng.com/blog/2013/01/javascript_strict_mode.htmlPurpose of using strict mode:- eliminate some of the unreasonable and less rigorous JavaScript syntax, and reduce some of the bizarre behavior; - eliminate some of

1. OverviewIn addition to the normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict). As the name implies, this mode allows JavaScript to run under stricter conditions.2. Why use Strict mode-Eliminate some of the

1. OverviewIn addition to the normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict). As the name implies, this mode allows JavaScript to run under stricter conditions.2. Why use Strict mode-Eliminate some of the

Ext.: http://ourjs.com/detail/52f572bf4534c0d806000024"Use strict" is a very good feature in JavaScript and is very easy to work with.How to useFile.js"Use Strict"function Dostuff () {Use Strict is enabled here!}Such Tiao file.js will be applied to

"Use strict"; When placed in the starting position of a JavaScript file or function (I am not sure if the script tag can begin), you can turn on strict mode. Otherwise-in the case of a JavaScript file that is not at the beginning of the file and not

This time the release content finally finished, can study the use of things.Before writing JS is the basic writing, write a function,This time to see colleagues with jquery and JS write plug-ins with the new knowledge that they do not know, I think

I changed a bug yesterday. The property name is repeated, which leads to a very interesting little bug. The result of a bug is the code of a JS object declaration, which is equivalent in structure to the following code.var fn = function () {" use

"Use strict ";// Strict Mode untitled document untitled document "Use strict"

1.with Statement throws Error2. An undeclared variable is assigned a value error3.arguments becomes static in strict mode, the parameters passed in are not related to arguments4.delete will error5. Duplicate attribute name of object will be error6.

This article mainly introduces the strict mode strictmode of Javascript, focuses on the use of the strict mode and the changes in the javascript syntax after the use of strictmode, if you need a friend, refer to the strict mode (strict mode) is a

The "strict mode" (Strict mode) is the new syntax defined by ECMA-262 Edition 5, which means that you want to execute with a strict JavaScript syntax, and some of the past idioms will throw syntaxerror exceptions, such as:1. Variables not declared

Javascript Strict Mode detailedNanyiDate: January 14, 2013I. OverviewIn addition to the normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict). As the name implies, this mode allows JavaScript to run under

Javascript Strict Mode detailedI. OverviewIn addition to the normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict). As the name implies, this mode allows JavaScript to run under stricter conditions.The purpose

1. In addition to the normal running mode, ECMAscript5 adds the second running mode: & quot; strict mode & quot; (strictmode ). As the name suggests, this mode allows Javascript to run under more stringent conditions. The purpose of setting up the &

I. OverviewIn addition to the normal operating mode, ECMAscript 5 adds a second mode of operation: "Strict mode" (strict). As the name implies, this mode allows JavaScript to run under stricter conditions.The purpose of setting up a "strict mode" is

Strict mode is a new syntax defined by ECMA-262 Edition 5, indicating that strict Javascript syntax is used to execute, some of the past-used writing will throw a SyntaxError exception, for example:1. var is not declared before the variable2. Use

In the strict JavaScript mode, some restrictions are imposed on JavaScript writing. If these restrictions are violated in the strict mode, the code will report an error. If you are interested in the knowledge of the strict mode of javascript, learn