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@Tom

space

Group: Members
Posts: 704
Joined: 24-May 11
Locationspace
Expertise:Python

Posted 15 May 2012 - 05:55 PM (#1)

Use Strict

description anyone

Would Someone please give me a basic explanation of when

use strict

is helpful or usefull. All of my jshint's always come out with the following (here's my screw ie script)

var screwIE;

screwIE = function() {
  if (navigator.appName === "Microsoft Internet Explorer" ? document.URL.indexOf("http://itom07.com/sorry") === -1 : void 0) {
    return window.location = "http://itom07.com/sorry";
  }
};

screwIE();

(I know its hackish but I was looking into different ways to write it. (besides the point)

Output:

Line 4: if (navigator.appName === "Microsoft Internet Explorer" ? document.URL.indexOf("http://itom07.com/sorry") === -1 : void 0) {
Missing "use strict" statement.

ocelotapps.com
jr wdR comedian under ThatRailsGuy

arronhunt, on 30 June 2012 - 10:09 PM, said:

Sir you are the first person to make me piss myself laughing. Kudos.

Daniel15

dan.cx

Group: Moderators
Posts: 3415
Joined: 17-April 10
LocationMelbourne, Australia
Expertise:HTML,CSS,PHP,Java,Javascript,Node.js,SQL

Posted 15 May 2012 - 07:44 PM (#2)

It enables strict mode, which disables some of the "bad parts" of JavaScript. John Resig wrote about it a while ago, and the Mozilla Developer Network has an article on it too.

If you do use it, make sure you test your JavaScript in a browser that supports strict mode (like Firefox 4+ or Chrome).

Daniel15! :D

Repeat after me: jQuery is not JavaScript. It is not the answer to every JavaScript-related question. When you have to write some JavaScript, do not instantly react with "Oh, I'll do that with jQuery!"

Spoiler

javascript:alert((''+[][[]])[!+[]+!+[]]+(![]+[])[+!+[]]+(''+!+[]/[])[+!+[]]+([![]]+[][[]])[+!+[]+[+[]]]+(''+!![])[+!+[]+!![]+!![]]+(![]+[])[!+[]+!+[]]+(+!+[])+(!+[]+!+[]+!+[]+!+[]+!+[]))

Kyek, on 16 November 2011 - 11:14 AM, said:

Daniel15 is ruining my life D:

markbrown4, on 12 October 2012 - 03:02 AM, said:

When i grow up I want to be a Daniel15.

arronhunt

I'm a httpster

Group: Moderators
Posts: 3398
Joined: 09-March 10
LocationLos Angeles, CA
Expertise:HTML,CSS,Javascript,Graphics,Flash

Posted 15 May 2012 - 09:20 PM (#3)

You are putting a ternary operator inside an

if()

statement? Woah man. Woah.

DO NOT OPEN THIS

Spoiler

callumacrae

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Posted 15 May 2012 - 11:15 PM (#4)

arronhunt, on 15 May 2012 - 09:20 PM, said:

You are putting a ternary operator inside an

if()

statement? Woah man. Woah.

lol

Also, you should never use void.

Front-end developer and writer
Twitter | GitHub | phpBB Contributor and Website Team Member | lynxphp

@Tom

space

Group: Members
Posts: 704
Joined: 24-May 11
Locationspace
Expertise:Python

Posted 15 May 2012 - 11:38 PM (#5)

callumacrae, on 15 May 2012 - 11:15 PM, said:

lol

Also, you should never use void.

I was playing with Coffeescript, its just how it generated.

# screw Internet Explorer

screwIE = () ->
	window.location = "http://itom07.com/sorry" if document.URL.indexOf("http://itom07.com/sorry") is -1 if navigator.appName is "Microsoft Internet Explorer"

screwIE()

ocelotapps.com
jr wdR comedian under ThatRailsGuy

arronhunt, on 30 June 2012 - 10:09 PM, said:

Sir you are the first person to make me piss myself laughing. Kudos.