get index of substring in string js code example
Example: js indexof string
const paragraph = 'The quick brown fox';
console.log(paragraph.indexOf('T'));
>> 0
console.log(paragraph.indexOf('h'));
>> 1
console.log(paragraph.indexOf('Th'));
>> 0
console.log(paragraph.indexOf('he'));
>> 1
console.log(paragraph.indexOf('x'));
>> 18