# ObjCObject.toJS

Copy Foundation values into JavaScript.

```js
object.toJS()
```

## Arguments

No arguments.

## Returns

Copied Foundation data: string, boolean, number, array, plain object or null. Large integers become BigInt, or decimal strings if BigInt is unavailable.

## Example

```js
const text = ObjC.call("NSString", "stringWithString:", "Hello");
try { console.log(text.toJS()); } // "Hello"
finally { text.release(); }
```

## Notes

Start with [Objective-C step by step](/doc/objc). Here, object means a proxy returned by ObjC/RemoteObjC, not a global named ObjCObject. This copies data, not every kind of native object. Unsupported objects or cyclic/deep data can throw.

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