JSFiddle - React, Tailwind, and code Playground

by amir_ch

HTML

<input id="txt" type="text" width:210px"/><button onclick="testString($('#txt').val())">Check</button>

JavaScript

function testString(str) {
    // using a literal
    // alert (str.match(/(['"])[^'"]*\1/) != null); 
    
    // using RegExp Object
    var regExpObject = new RegExp(/(['"])[^'"]*\1/gi);
    alert(regExpObject.test(str));
                                           
}