Do this:
var currency_symbols = {
'USD': '$', // US Dollar
'EUR': '€', // Euro
'CRC': '₡', // Costa Rican Colón
'GBP': '£', // British Pound Sterling
'ILS': '₪', // Israeli New Sheqel
'INR': '₹', // Indian Rupee
'JPY': '¥', // Japanese Yen
'KRW': '₩', // South Korean Won
'NGN': '₦', // Nigerian Naira
'PHP': '₱', // Philippine Peso
'PLN': 'zł', // Polish Zloty
'PYG': '₲', // Paraguayan Guarani
'THB': '฿', // Thai Baht
'UAH': '₴', // Ukrainian Hryvnia
'VND': '₫', // Vietnamese Dong
};
var currency_name="INR";
if(currency_symbols[currency_name]!==undefined) {
alert(currency_symbols[currency_name]);
}
NOTE: Not every currency has symbol. Only listed above currencies have real symbol.