JavaScript常用事件大全：从基础到实战应用
// 实现简单绘图板constcanvas = document.getElementById('drawing-board');canvas.addEventListener('mousedown', startDrawing);canvas.addEven
应用 javascript keydown mousemov 2025-09-08 17:02 2
// 实现简单绘图板constcanvas = document.getElementById('drawing-board');canvas.addEventListener('mousedown', startDrawing);canvas.addEven
应用 javascript keydown mousemov 2025-09-08 17:02 2