Decode HTML String

function decodeHTMLEntities(str) {
            var element = document.createElement('div');
            if (str && typeof str === 'string') {
                // strip script/html tags
                str = str.replace(/<script[^>]*>([\S\s]*?)<\/script>/gmi, '');
                str = str.replace(/<\/?\w(?:[^"'>]|"[^"]*"|'[^']*')*>/gmi, '');
                element.innerHTML = str;
                str = element.textContent;
                element.textContent = '';
            }

            return str;
        }