这是DeepSeek V4 Pro的 
我要js，给了我一个html 
 [443e69ad137f6a39] 
(function() {
            // --- 创建全屏 Canvas ---
            const canvas = document.createElement('canvas');
            const ctx = canvas.getContext('2d');
            const W = window.innerWidth;
            const H = window.innerHeight;

            canvas.width = W;
            canvas.height = H;
            canvas.style.cssText = `
  ...