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2025-04-05 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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< flakes; s++) { this.snowflakes.push(new Snowflake()); } } update() { this.ctx.clearRect(0, 0, this.width, this.height); for (let flake of this.snowflakes) { flake.update(); this.ctx.save(); this.ctx.fillStyle = '#FFF'; this.ctx.beginPath(); this.ctx.arc(flake.x, flake.y, flake.radius, 0, Math.PI * 2); this.ctx.closePath(); this.ctx.globalAlpha = flake.alpha; this.ctx.fill(); this.ctx.restore(); } requestAnimationFrame(this.updateBound); }}new Snow();var stop = false;function show_runtime() { var newDay = '2022/2/1 00:00:00'; var countDate = new Date(newDay); var now = new Date().getTime(); gap = countDate - now; var second = 1000; var minute = second * 60; var hour = minute * 60; var day = hour * 24; var d = Math.floor(gap / day); var h = Math.floor((gap % day) / hour); var m = Math.floor((gap % hour) / minute); var s = Math.floor((gap % minute) / second); if ((d, h, m, s < 0)) { stop = true; } else { document.getElementById('day').innerText = d; document.getElementById('hour').innerText = h; document.getElementById('minute').innerText = m; document.getElementById('second').innerText = s; }}function newyear() { document.getElementById('title').innerText = 'Happy Spring Festival'; document.getElementById('day').innerText = '春'; document.getElementById('hour').innerText = '节'; document.getElementById('minute').innerText = '快'; document.getElementById('second').innerText = '乐';}var time = setInterval(() =>{show_runtime (); if (stop = true) {newyear (); clearInterval (time);}}, 1000); / / timer controls the automatic switching of pictures function downTime () {let item = 1; setInterval () = > {item++; if (item = 4) {item = 1;} console.log (item, 'item') Document.body.style.backgroundImage = `url (. / image/geyao$ {item} .jpg) `; return item; e.stopPropagation (); / / cancel event bubbling}, 2000);} _ window.onload = downTime; effect demonstration mobile terminal
Pc end
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