包含一个触摸屏设备上所有当前触摸点的一个数组 Array。
touches 数组默认为空。当用户触摸屏幕时，一个新的触摸点会被追踪并添加到这个数组中。触摸点是带有以下属性的对象 Objects：
// Iterate over the touches array. for (let touch of touches) { // x-coordinate relative to the top-left // corner of the canvas. console.log(touch.x); <p> // y-coordinate relative to the top-left // corner of the canvas. console.log(touch.y);</p> <p> // x-coordinate relative to the top-left // corner of the browser. console.log(touch.winX);</p> <p> // y-coordinate relative to the top-left // corner of the browser. console.log(touch.winY);</p> <p> // ID number console.log(touch.id); } </p>示例
Notice any errors or typos? Please let us know. Please feel free to edit src/events/touch.js and open a pull request!