Tutorial by Examples

To add annotations, hints, or exclude some code from being executed JavaScript provides two ways of commenting code lines Single line Comment // Everything after the // until the end of the line is excluded from execution. function elementAt( event ) { // Gets the element from Event coordinate...

HTML comments (optionally preceded by whitespace) will cause code (on the same line) to be ignored by the browser also, though this is considered bad practice. One-line comments with the HTML comment opening sequence (<!--): Note: the JavaScript interpreter ignores the closing characters of H...