JavaScriptObject

Inherits: Reference < Object

本地JavaScript对象的封装类。

描述

JavaScriptObject用于与通过JavaScript.get_interface、JavaScript.create_object或JavaScript.create_callback检索或创建的JavaScript对象交互。

例:

  1. extends Node
  3. var _my_js_callback = JavaScript.create_callback(self, "myCallback") # This reference must be kept
  4. var console = JavaScript.get_interface("console")
  6. func _init():
  7.     var buf = JavaScript.create_object("ArrayBuffer", 10) # new ArrayBuffer(10)
  8.     print(buf) # prints [JavaScriptObject:OBJECT_ID]
  9.     var uint8arr = JavaScript.create_object("Uint8Array", buf) # new Uint8Array(buf)
  10.     uint8arr[1] = 255
  11.     prints(uint8arr[1], uint8arr.byteLength) # prints 255 10
  12.     console.log(uint8arr) # prints in browser console "Uint8Array(10) [ 0, 255, 0, 0, 0, 0, 0, 0, 0, 0 ]"
  14.     # Equivalent of JavaScript: Array.from(uint8arr).forEach(myCallback)
  15.     JavaScript.get_interface("Array").from(uint8arr).forEach(_my_js_callback)
  17. func myCallback(args):
  18.     # Will be called with the parameters passed to the "forEach" callback
  19.     # [0, 0, [JavaScriptObject:1173]]
  20.     # [255, 1, [JavaScriptObject:1173]]
  21.     # ...
  22.     # [0, 9, [JavaScriptObject:1180]]
  23.     print(args)

注意： 只在HTML5平台上可用。