Java Javascript AST Check hasMember(JSObject object, String name)

Description

has Member

License

Open Source License

Declaration

public static boolean hasMember(JSObject object, String name) 

Method Source Code

//package com.java2s;
/*//from ww  w .j a  va 2 s  .c om
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Tomona Nanase
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import netscape.javascript.JSException;
import netscape.javascript.JSObject;

public class Main {

    public static boolean hasMember(JSObject object, String name) {
        if (object == null)
            return false;

        if (name == null)
            return false;

        try {
            return (boolean) object.eval("typeof this." + name
                    + " !== 'undefined'");
        } catch (JSException e) {
            return false;
        }
    }
}

Related

1. getJSArrayLength(JSObject jsObject)
2. getObject(JSObject parent, Object object)
3. toPrimitiveIntArray(JSObject jsObject)