How to replace text in JS using regex?

Question

PHP

Hello! There is a line like :qwerty1:qwerty2...
So - I need to replace the text between the colon and the ellipsis (inclusive) with an empty one. That is, remove the text. Apparently with the help of a regular expression .. As a result, you should get something like: qwety1

Answer 1

":qwerty1:qwerty2...".replace(/:[^:]+?(\.{3}|…)/,"")

Answer 2

Much easier without regular expressions:

var str = ":qwerty1:qwerty2...",
      divided = str.split(":");

divided.pop();
alert(divided.join(":"));