param() \ Language (API) \ Processing 1.0
Author: Casey Reas & Ben Fry
Description: Processing is an electronic sketchbook for developing ideas. It is a context for learning fundamentals of computer programming within the context of the electronic arts.
Keywords: Processing, Processing, Interactive Media, Electronic Arts, Programming, Java, Ben Fry, Casey Reas

Reference for Processing version 1.5. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.

Name | ### param()
Examples |
    void setup() {
      size(100, 100);

      // Read the value "51" from the following text embedded in an HTML page:
      // <applet code="param_example" archive="param_example.jar" width=100 height=100>
      // <param name="back" VALUE="51">
      // </applet>
      String bgcolorStr = param("back");
      int bgcolor = int(bgcolorStr);
      background(bgcolor);
    }
Description | Reads the value of a param. Values are always read as a String so if you want them to be an integer or other datatype they must be converted. The param() function will only work in a web browser. The function should be called inside setup(), otherwise the applet may not yet be initialized and connected to its parent web browser.
Syntax |
    param(s)
Parameters |
s | String: name of the param to read
Returns | String
Usage | Web

Updated on August 30, 2010 04:29:39pm EDT