regex match string code example
Example 1: javascript regex example match
let reg = /abc/
reg = new RegExp('abc')
let str = 'Abc abc abc'
str.match(/abc/)
str.match(/abc/g)
str.match(/abc/i)
str.match(/abc/ig)
str.match('abc', 'ig')
Example 2: regex match exact string
you want to achieve a case insensitive match for the word "rocket"
surrounded by non-alphanumeric characters. A regex that would work would be:
\W*((?i)rocket(?-i))\W*
Example 3: match regex
const regex = /([a-z]*)ball/g;
const str = "basketball football baseball";
let result;
while((result = regex.exec(str)) !== null) {
console.log(result[1]);
}
Example 4: how to use the match function in javascript for regex
const str = 'For more information, see Chapter 3.4.5.1';
const re = /see (chapter \d+(\.\d)*)/i;
const found = str.match(re);
console.log(found);
Example 5: regex exact match
use ^ and $ to match the start and end of your string
^matchmeexactly$