我正在使用 JS 創建一個畫布，然后在所述畫布中創建一個組件，并且我希望該組件周圍有藍色邊框。我可以用 javascript 或 CSS 來做到這一點嗎？<html><head><meta name="viewport" content="width=device-width, initial-scale=1.0"/><style>canvas { border:1px solid #d3d3d3; background-color: #f1f1f1;}</style></head><body onload="startGame()"><script>var myGamePiece;function startGame() { myGameArea.start(); myGamePiece = new component(30, 30, "red", 10, 120);}var myGameArea = { canvas : document.createElement("canvas"), start : function() { this.canvas.width = 480; this.canvas.height = 270; this.context = this.canvas.getContext("2d"); document.body.insertBefore(this.canvas, document.body.childNodes[0]); }}function component(width, height, color, x, y) { this.width = width; this.height = height; this.x = x; this.y = y; ctx = myGameArea.context; ctx.fillStyle = color; ctx.fillRect(this.x, this.y, this.width, this.height);}</script><p>We have added a component to our game, a red square!</p></body></html>這是代碼的簡化版本。我試圖為名為 myGamePiece 的組件提供邊框。
如何使用 javascript 在畫布中獲取組件元素周圍的邊框？
慕娘9325324
2023-07-29 15:14:30
