130 lines
No EOL
3.5 KiB
JavaScript
130 lines
No EOL
3.5 KiB
JavaScript
//
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// Jala Project [http://opensvn.csie.org/traccgi/jala]
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//
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// Copyright 2004 ORF Online und Teletext GmbH
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//
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// Licensed under the Apache License, Version 2.0 (the ``License'');
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an ``AS IS'' BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// $Revision$
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// $LastChangedBy$
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// $LastChangedDate$
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// $HeadURL$
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//
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/**
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* @fileoverview Fields and methods of the Global prototype.
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*/
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/**
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* Returns true if the value passed as argument is either a string literal,
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* an instance of String or of java.lang.String.
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* @param {Object} val The value to test
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* @returns True if the value is a string, false otherwise
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* @type Boolean
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*/
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function isString(val) {
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return typeof(val) == "string" ||
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val instanceof java.lang.String ||
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val instanceof String;
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};
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/**
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* Returns true if the value passed as argument is either a boolean
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* literal or an instance of Boolean.
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* @param {Object} val The value to test
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* @returns True if the value is a boolean, false otherwise
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* @type Boolean
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*/
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function isBoolean(val) {
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return typeof(val) == "boolean" ||
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val instanceof Boolean;
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};
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/**
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* Returns true if the value passed as argument is either a number,
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* an instance of Number or of java.lang.Number.
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* @param {Object} val The value to test
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* @returns True if the value is a number, false otherwise
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* @type Boolean
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*/
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function isNumber(val) {
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return typeof(val) == "number" ||
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val instanceof java.lang.Number ||
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val instanceof Number;
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};
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/**
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* Returns true if the value passed as argument is null.
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* @param {Object} val The value to test
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* @returns True if the value is null, false otherwise
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* @type Boolean
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*/
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function isNull(val) {
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return val === null;
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};
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/**
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* Returns true if the value passed as argument is undefined.
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* @param {Object} val The value to test
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* @returns True if the value is undefined, false otherwise
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* @type Boolean
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*/
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function isUndefined(val) {
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return val === undefined;
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};
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/**
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* Returns true if the value passed as argument is an array.
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* @param {Object} val The value to test
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* @returns True if the value is an array, false otherwise
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* @type Boolean
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*/
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function isArray(val) {
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return val instanceof Array;
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};
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/**
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* Returns true if the value passed as argument is either a Javascript date
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* or an instance of java.util.Date.
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* @param {Object} val The value to test
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* @returns True if the value is a date, false otherwise
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* @type Boolean
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*/
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function isDate(val) {
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return val instanceof Date ||
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val instanceof java.util.Date;
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};
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/**
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* Returns true if the value passed as argument is either a Javascript
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* object or an instance of java.lang.Object.
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* @param {Object} val The value to test
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* @returns True if the value is an object, false otherwise
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* @type Boolean
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*/
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function isObject(val) {
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return val instanceof Object ||
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val instanceof java.lang.Object;
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};
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/**
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* Returns true if the value passed as argument is a function.
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* @param {Object} val The value to test
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* @returns True if the argument is a function, false otherwise
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* @type Boolean
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*/
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function isFunction(val) {
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return val instanceof Function;
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}; |