var CURSOR; Math.lerp = (a, b, n) => (1 - n) * a + n * b; const getStyle = (el, attr) => { try { return window.getComputedStyle ? window.getComputedStyle(el)[attr] : el.currentStyle[attr]; } catch (e) {} return ""; }; class Cursor { constructor() { this.pos = { curr: null, prev: null }; this.pt = []; this.create(); this.init(); this.render(); } move(left, top) { this.cursor.style["left"] = `${left}px`; this.cursor.style["top"] = `${top}px`; } create() { if (!this.cursor) { this.cursor = document.createElement("div"); this.cursor.id = "cursor"; this.cursor.classList.add("hidden"); document.body.append(this.cursor); } var el = document.getElementsByTagName('*'); for (let i = 0; i < el.length; i++) if (getStyle(el[i], "cursor") == "pointer") this.pt.push(el[i].outerHTML); document.body.appendChild((this.scr = document.createElement("style"))); this.scr.innerHTML = `* {cursor: url("data:image/svg+xml,") 4 4, auto !important}`; } refresh() { this.scr.remove(); this.cursor.classList.remove("hover"); this.cursor.classList.remove("active"); this.pos = { curr: null, prev: null }; this.pt = []; this.create(); this.init(); this.render(); } init() { document.onmouseover = e => this.pt.includes(e.target.outerHTML) && this.cursor.classList.add("hover"); document.onmouseout = e => this.pt.includes(e.target.outerHTML) && this.cursor.classList.remove("hover"); document.onmousemove = e => { (this.pos.curr == null) && this.move(e.clientX - 8, e.clientY - 8); this.pos.curr = { x: e.clientX - 8, y: e.clientY - 8 }; this.cursor.classList.remove("hidden"); }; document.onmouseenter = e => this.cursor.classList.remove("hidden"); document.onmouseleave = e => this.cursor.classList.add("hidden"); document.onmousedown = e => this.cursor.classList.add("active"); document.onmouseup = e => this.cursor.classList.remove("active"); } render() { if (this.pos.prev) { this.pos.prev.x = Math.lerp(this.pos.prev.x, this.pos.curr.x, 0.45); this.pos.prev.y = Math.lerp(this.pos.prev.y, this.pos.curr.y, 0.45); this.move(this.pos.prev.x, this.pos.prev.y); } else { this.pos.prev = this.pos.curr; } requestAnimationFrame(() => this.render()); } } (() => { CURSOR = new Cursor(); // 需要重新获取列表时,使用 CURSOR.refresh() })();