如何在Phaser Framework中截取画布截图？(How do I take a screenshot of canvas in Phaser Framework?)

 我正在使用Phaser Framework制作游戏。 我尝试使用todateurl但它没有定义，我做错了什么？ 
 
var game = new Phaser.Game(1000, 700, Phaser.CANVAS, 'game');
game.state.add('boot', boots);
game.state.add('load', loads);  
game.state.start('boot');  
console.log(game);   // works
console.log(game.canvas);    // works
game.canvas.toDataURL();    //undefined

I am making a game using Phaser Framework. I try to use todateurl but it isn't defined, what am I doing wrong?
 
var game = new Phaser.Game(1000, 700, Phaser.CANVAS, 'game');
game.state.add('boot', boots);
game.state.add('load', loads);  
game.state.start('boot');  
console.log(game);   // works
console.log(game.canvas);    // works
game.canvas.toDataURL();    //undefined

原文：https://stackoverflow.com/questions/27869544