JavaScript Overview

OpenAir user scripts are external JavaScript files. OpenAir is compliant with ECMAScript 5.

JavaScript is a cross-platform, object-oriented scripting language.

Important:

For OpenAir to use an external JavaScript file, it must be stored in a Workspace as an ASCII text file with the file extension .js.

JavaScript is easy to learn.

Key Points

• Semicolons to end statements are optional in JavaScript, but for clarity you are advised to always use them.

• JavaScript ignores extra white space. Use white space to make your scripts more readable.

  Note:

  The following statements are the same.

                var receiptDate=NSOA.form.getValue('date');
  var receiptDate = NSOA.form.getValue('date'); 
  
              

• JavaScript is case sensitive.

  Important:

  The following variables are NOT the same!

                var receiptDate;
  var ReceiptDate; 
  
              

• JavaScript supports single and multliline comments. Use comments to make your scripts maintainable!

                // This is a single line comment
  
  /*
     This is a multiline comment
  */ 
  
              

  Tip:

  You can comment out lines of script to prevent them from being executed. This is a useful debugging technique.