JSFiddle - React, Tailwind, and code Playground
JavaScript
var s = 'x-transgrid-id-9d903e38c0a5443895914dc95cc1aec9 x-transgrid-row transactional ';
var a = s.replace(/\s+/g, ' ').split(' ');
for (var i = 0; i < a.length; i++) {
var n = a[i].indexOf('x-transgrid-id-');
if (n === 0) {
alert(a[i].substr('x-transgrid-id-'.length + 1));
}
}