CODEWITHSUNDEEP
javascript
shashashamti2008
shashashamti2008

Reputation: 2337

Usage of Exclamation mark in JavaScript

I am a newbie to Javascript. I am trying to understand the following lines of my main.js file:

define([ 'shader!vertShader.vert',
         'shader!compShader.frag',
         'myJSLib/MyJSLib'
        ],
function( vertShader,
          compShader,
          MyJSLib
          ){
"use strict" ;

My understanding is that 'shader!vertShader.vert' will be assigned to vertShader and 'shader!compShader.frag' to compShader and 'myJSLib/MyJSLib' to myJSLib.

I would like to understand what the exclamation mark does in shader!vertShader.vert. My Google search all shows ! is the negation operator, which does not seems to be the case here.

Upvotes: 0

Views: 142

Answers (1)

jake2389
jake2389

Reputation: 1174

This is an example of AMD modules, which have their own format for organizing JS modules/libraries. You are correct in that each of the array arguments map to the corresponding function argument.

In this case this is using a shader language and the ! bang symbol refers to different sections of a shader file (used for graphics in things like WebGL) (specifically a vertex shader and a fragment shader, respectively).

Upvotes: 4

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