isHostObject.js
690 Bytes
define([], function() {
/**
* Checks if `value` is a host object in IE < 9.
*
* @private
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a host object, else `false`.
*/
var isHostObject = (function() {
try {
Object({ 'toString': 0 } + '');
} catch(e) {
return function() { return false; };
}
return function(value) {
// IE < 9 presents many host objects as `Object` objects that can coerce
// to strings despite having improperly defined `toString` methods.
return typeof value.toString != 'function' && typeof (value + '') == 'string';
};
}());
return isHostObject;
});