"Notes" JavaScript coding specification-commas and semicolons

Do not use commas before statements.

Badvar stories = [Once, upon, atime];//goodvar story = [Once,upon,atime];

Do not have extra commas: this can cause problems in IE6, IE7, and IE9 's weird patterns, and in some implementations of ES3, extra commas increase the length of the array. Clarified in ES5 (source)

Badvar hero = {firstName: ' Kevin ', lastName: ' Flynn ',};var heroes = [' Batman ', ' Superman ',];//goodvar hero = {firstName: ' Kevin ', lastName: ' Flynn '};var heroes = [' Batman ', ' Superman '];

Semicolons Use the example.

Bad (function () {var name = ' Skywalker ' return name})//Good (function () {var name = ' Skywalker '; return name;}) ();

God Bless me!

"Notes" JavaScript coding specification-commas and semicolons