JavaScript中的RegEx-开头和结尾

Question

I want to extract a string using RegEx in Javascript for example

StudentName nameX = John; 

or

StudentName nameX;

I want to extract only "nameX" this is what i've tried so far.

var name = allName.match("StudentName(.*);|StudentName(.*)=");

what I'm getting is : "nameX = John" , but I'm not getting "nameX" only.

Answer 1

Try this non greedy pattern

var name = allName.match("StudentName\\s*(.*?)\\s*[=;]");

JSFiddle Demo

Answer 2

Use regex pattern inside of match

match(/StudentName\s+(\w+)/)[1]

See this demo .​​

Answer 3

如果在空格上分割，则索引1的第二个匹配项应包含名称。

var name = allName.split(/[ ;]/g)[1];