Till now whatever programming languages I have encountered use double quotes for string and single quotes for characters but some of the javascript code that I saw seemed to be using them interchangeably,is it possible?
In which situations can they be interchanged?
In which situations they CANNOT be interchanged?
They are interchangeable, but when you open a string with one, you must close it with the same character. For instance,
"Hello' would not be a valid string.
EDIT: PS, this allows for you to enclose quotes in a string. For example, if you want to have the string literal "Hello", you could have
var string = '"Hello"'
yes they can as long as you keep in mind a few main things;
1- double quotes are the preferred by the browser to se they parameters values, so you never use them when setting javascript values or function calls within the DOM. 2- double quotes are also used to specify json an properties a json string using single quotes to delimiter they key, value pairs is not valid. 3-they don't complement each other, so what one starts one must end. 4 - if you need to use the same quote inside your string you need to scape it.
