Javascript正则表达式冒号？

Question

I'm wondering how I can use javascript regex to match a word like:

Name:

with all variations of spaces ? This is where I'm getting stuck. ie

• Name<space>: Fred
• Name:<space>Fred or Name<space>:<space>Fred

Note the positioning of the spaces after the name, after the colon etc ?

I was hoping something like /(name(\\s*:\\s*)?)\\w/g would work but it doesn't :(

Answer 1

• Name starts with a capital letter. The regex should also match name starting with a capital N.

  • If you want the entire regex to be case insensitive, add the i flag at the end.
  • If you only want name to start with a lower or upper case N, then use a set

• The * means 0 or more. The ? is not needed anymore.

Something like this should work

/Name\s*:\s*\w*/g    //matches "Name"

/[Nn]ame\s*:\s*\w*/g //matches "Name" or "name"

/name\s*:\s*\w*/gi   //the entire regex is case insensitive

Answer 2

正则表达式/name\\s*:\\s*\\w/gi就足够了。