JSFiddle - React, Tailwind, and code Playground
JavaScript
var str = '\n\
"\n\
item :*X00132BhJk* \n\
\n\
www.domain.com/X00132BhJk\n\
\n\
www.domainsearch.com/search?ident=X00132BhJk\n\
\n\
*X00132BhJk*\n\
\n\
*X00132BhJk*\n\
"\n\
';
str = str.replace(/(^|[^\/?=])(\bX00[A-Z0-9]{7}\b)/gi, '$1<span class="context context_ident">$2</span>');
console.log(str);