// // Jala Project [http://opensvn.csie.org/traccgi/jala] // // Copyright 2004 ORF Online und Teletext GmbH // // Licensed under the Apache License, Version 2.0 (the ``License''); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an ``AS IS'' BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // // $Revision$ // $LastChangedBy$ // $LastChangedDate$ // $HeadURL$ // /** * @fileoverview Fields and methods of the Global prototype. */ /** * Returns true if the value passed as argument is either a string literal, * an instance of String or of java.lang.String. * @param {Object} val The value to test * @returns True if the value is a string, false otherwise * @type Boolean */ function isString(val) { return typeof(val) == "string" || val instanceof java.lang.String || val instanceof String; }; /** * Returns true if the value passed as argument is either a boolean * literal or an instance of Boolean. * @param {Object} val The value to test * @returns True if the value is a boolean, false otherwise * @type Boolean */ function isBoolean(val) { return typeof(val) == "boolean" || val instanceof Boolean; }; /** * Returns true if the value passed as argument is either a number, * an instance of Number or of java.lang.Number. * @param {Object} val The value to test * @returns True if the value is a number, false otherwise * @type Boolean */ function isNumber(val) { return typeof(val) == "number" || val instanceof java.lang.Number || val instanceof Number; }; /** * Returns true if the value passed as argument is null. * @param {Object} val The value to test * @returns True if the value is null, false otherwise * @type Boolean */ function isNull(val) { return val === null; }; /** * Returns true if the value passed as argument is undefined. * @param {Object} val The value to test * @returns True if the value is undefined, false otherwise * @type Boolean */ function isUndefined(val) { return val === undefined; }; /** * Returns true if the value passed as argument is an array. * @param {Object} val The value to test * @returns True if the value is an array, false otherwise * @type Boolean */ function isArray(val) { return val instanceof Array; }; /** * Returns true if the value passed as argument is either a Javascript date * or an instance of java.util.Date. * @param {Object} val The value to test * @returns True if the value is a date, false otherwise * @type Boolean */ function isDate(val) { return val instanceof Date || val instanceof java.util.Date; }; /** * Returns true if the value passed as argument is either a Javascript * object or an instance of java.lang.Object. * @param {Object} val The value to test * @returns True if the value is an object, false otherwise * @type Boolean */ function isObject(val) { return val instanceof Object || val instanceof java.lang.Object; }; /** * Returns true if the value passed as argument is a function. * @param {Object} val The value to test * @returns True if the argument is a function, false otherwise * @type Boolean */ function isFunction(val) { return val instanceof Function; };