How to check if an object is an array?

Question

I\'m trying to write a function that either accepts a list of strings, or a single string. If it\'s a string, then I want to convert it to an array with just the one item so

Answer 1

Array.isArray works fast, but it isn't supported by all versions of browsers. So you could make an exception for others and use universal method:

    Utils = {};    
    Utils.isArray = ('isArray' in Array) ? 
        Array.isArray : 
        function (value) {
            return Object.prototype.toString.call(value) === '[object Array]';
        }