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Comment Statements 

Causes comments to be ignored by the JScript parser.

//single-line comment
// comment 

//multiline comment

//single-line conditional comment

//multiline conditional comment

The condStatement argument above is conditional compilation code to be used if conditional compilation is activated. If Syntax 3 is used, there can be no space between the "//" and "@" characters.

Use comments to keep parts of a script from being read by the JScript parser. You can use comments to include explanatory remarks in a program.

If Syntax 1 is used, the parser ignores any text between the comment marker and the end of the line. If Syntax 2 is used, it ignores any text between the beginning and end markers.

Syntaxes 3 and 4 are used to support conditional compilation while retaining compatibility with browsers that do not support that feature. These browsers treat those forms of comments as syntaxes 1 and 2 respectively.

The following example illustrates the most common uses of the comment statement.

function myfunction(arg1, arg2){
   /* This is a multiline comment that
      can span as many lines as necessary. */
   var r = 0;
   // This is a single line comment.
   r = arg1 + arg2; // Sum the two arguments.