title: How to include shaders as external files
body: <p>Is there a way to include this shader code as an external <em>vertexShader.js</em> without quotes and include between "script" tags?</p>
  
  <pre><code>var vertCode =
  'attribute vec3 coordinates;' +
  
  'void main(void) {' +
  ' gl_Position = vec4(coordinates, 1.0);' +
  'gl_PointSize = 10.0;'+
  '}';
  </code></pre>