Semicolon Insertion
Semicolon insertion refers to the ability of JavaScript to insert semicolons between statements that are separated by a new line. This feature is something that must be in the back of your mind when working on javascript.
If I write this...
var a = 3
var b = 5JavaScript will automatically insert the necessary semicolons...
var a = 3;
var b = 5;However, it is highly recommended that you provide the necessary semicolons yourself. This is because there are cases where the interpreter may make mistakes when inserting the semicolons. An example is...
return
true;After Semicolon insertion, that will become...
return;
true;You probably wanted return true;.