JavaScript中的String.empty

Question

In .NET, I tend to use String.Empty when I want to use an empty string.

I would like to add this functionality to the String object in JavaScript.

My first thought was something like this:

if(!String.empty){
    String.empty = '';
}

I suppose this is the right way to go?

The reason that I'm asking is because I want to know if I should involve the String.prototype . But it feels wrong since this has nothing to do with actually instantiating a new String() . Or am I wrong?

Answer 1

I do always like this:

var str = $.trim(' string ');
if(str){
   // not empty
 }else{
   // empty
 }

Answer 2

For all I know, you are completely right. The String.prototype would give an 'empty' property to all your strings, but that is clearly not what you want. You could even omit the 'if' part and just write

String.empty = '';

I hope this helps.