JavaScript Comments Using Comments
Example
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 coordinates
return document.elementFromPoint(event.clientX, event.clientY);
}
// TODO: write more cool stuff!
Multi-line Comment /**/
Everything between the opening /* and the closing */ is excluded from execution, even if the opening and closing are on different lines.
/*
Gets the element from Event coordinates.
Use like:
var clickedEl = someEl.addEventListener("click", elementAt, false);
*/
function elementAt( event ) {
return document.elementFromPoint(event.clientX, event.clientY);
}
/* TODO: write more useful comments! */
