const regex = /(.*?'hello'.*?),'hello',(.*)/g;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(.*?\'hello\'.*?),\'hello\',(.*)', 'g')
const str = `'one',2,'three','hello','xyz',5,'hello','mnr','hello','axi'
'onae',2,'tree','hello','xyz',6,'hello','mnr','hello','asd'
'onee',2,'xdsa','hello','xyz',5,'hello','mnr','hello','aew'
'owne',2,'thr','hello','xyz',3,'hello','mnr','hello','az'
'ocne',2,'tee','hello','xyz',5,'hello','mnr','hello','zse'
'owne',2,'tre','hello','xyz',2,'hello','mnr','hello','aai'`;
const subst = `$1,0,$2`;
// The substituted value will be contained in the result variable
const result = str.replace(regex, subst);
console.log('Substitution result: ', result);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions