JS实现网站动态显示倒计时,效果如下:
实现方法如下:
<span id="target"></span>
// 为简化。每月默认为30天; function getTimeString() { var start = new Date(); var end = new Date(start.getFullYear() + 1, 0, 1); var elapse = Math.floor((end - start) / 1000); var seconds = elapse % 60 ; var minutes = Math.floor(elapse / 60) % 60; var hours = Math.floor(elapse / (60 * 60)) % 24; var days = Math.floor(elapse / (60 * 60 * 24)) % 30; var months = Math.floor(elapse / (60 * 60 * 24 * 30)) % 12; var years = Math.floor(elapse / (60 * 60 * 24 * 30 * 12)); return start.getFullYear() + '年还剩' + years + '年' + months + '月' + days + '日' + hours + '小时' + minutes + '分' + seconds + '秒'; } function domText(elem, text) { if (text == undefined) { if (elem.textContent) { return elem.textContent; } else if (elem.innerText) { return elem.innerText; } } else { if (elem.textContent) { elem.textContent = text; } else if (elem.innerText) { elem.innerText = text; } else { elem.innerHTML = text; } }}var target = document.getElementById('target');setInterval(function () { domText(target, getTimeString());}, 1000)
完成。
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