Umgesetzte Idee: Kopie von einem Objekt. Egal von welchem.

[Yobert]

Hi,

ich benötigte für ein Projekt die Möglichkeit, Objekte, Arrays, Strings, etc. zu kopieren. Auch wenn diese Typen-gemischt und verschachtelt sind.

Hier ist meine Umsetzung:

// Object copy
Object.prototype.copy = function () {
    
    // if this has a length
    // it must be an array, for objects have no length
    if (this.length != undefined) return this.toArray ();
    
    // this is an object
    else {
        
        // create result object holder
        var result = {};
        
        // copy all nested objects recursively
        for (obj in this) result[obj] = this[obj].copy ();
        
        // return result
        return result;
        
    }
    
};
 
// String copy
String.prototype.copy = function () {
    
    // return String
    return String (this);
    
};
 
// Number copy
Number.prototype.copy = function () {
    
    // return Number
    return Number (this);
    
};
 
// Boolean copy
Boolean.prototype.copy = function () {
    
    // return evaluated boolean
    return Boolean (Number (this));
    
    // Comment:
    // the Number () process is necessary,
    // because if it is not used, it would return true every time
    
};
 
// Array convert and copy
// IMPORTANT:
// This method forces an array conversion!
// Even if the contents are not Array-like.
Object.prototype.toArray = function () {
    
    // create result array holder
    var result = [];
    
    // count results
    var resultCount = 0;
    
    // browse through all nested objects
    for (obj in this) {
        
        // convert and copy all nested arrays recursively
        if (typeof (this[obj]) == "object" && this[obj].length) result[obj] = this[obj].toArray ();
        
        // convert all other non-arrays
        else result[obj] = this[obj].copy ();
        
        // increase result count
        resultCount++;
    }
    
    // if we don't have any results / nested objects
    // include this into an Array
    // and return this Array
    if (resultCount == 0) return Array (this);
    
    // return result
    return result;
    
};
// hide methods
ASSetPropFlags (Object.prototype, ["copy","toArray"], 1);
ASSetPropFlags (String.prototype, ["copy"], 1);
ASSetPropFlags (Number.prototype, ["copy"], 1);
ASSetPropFlags (Boolean.prototype, ["copy"], 1);
 
// Test
 
mixed = {};
mixed.obj1 = {};
mixed.obj1.obj = {};
mixed.obj1.obj.str1 = "Object1/Object/String1";
mixed.obj1.obj.str2 = "Object1/Object/String2";
mixed.obj1.obj.arr = [];
mixed.obj1.obj.arr[0] = ["Object1/Object/Array/0/0:String", 0, false, {str: "Object1/Object/Array/0/3:Object/String"}];
mixed.obj1.obj.arr[1] = ["Object1/Object/Array/1/0:String", 1, true];
mixed.obj1.obj.arr.nonArray = ["Object1/Object/Array/NonArray", 2, true];
mixed.obj2 = {};
mixed.obj2.str1 = "Object2/String1";
mixed.obj2.str2 = "Object2/String2";
mixed.obj2.num = 23;
mixed.bool = false;
 
mixedCopy = mixed.copy ();
 
numArray = Number (17).toArray (); 

Zum Kommentieren, Kritisieren, Korrigieren und Kopieren freigegeben.

Gruß

Yobert

[Yobert]

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