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JSFiddle - React, Tailwind, and code Playground

JavaScript

var reg = /^Chapter [1-9][0-9]{0,1}/,
	str1 = 'Chapter 29 ',
    str2 = 'this is Chapter 29';
document.write('/^Chapter [1-9][0-9]{0,1}/.test(\'Chapter 29 \'): ' + reg.test(str1) + '<br>');
document.write('/^Chapter [1-9][0-9]{0,1}/.test(\'this is Chapter 29\'):  ' + reg.test(str2));

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