从JavaScript字符串中删除空格，但不是所有空格

Question

I have a string

str = 'first last1; first last2; first Last3;';

I am looking to remove the spaces only after the semicolons.

I have tried using

str = str.replace(';' + /\s+/g, ';');

and

str = str.replace((';' + /\s+/g), ';');

but it is not working.

any help would be appreciated.

Answer 1

 str = 'first last1; first last2; first Last3;'; str = str.replace(/;\\s+/g, ';'); alert( str ); 

You were quite close:

str = str.replace(/;\s+/g, ';');