这个应该是已经有很多人做过的东西,我应该只是算手痒,想写一下,所以,花了点时间折腾了这个,顺便把 Dark Mode 的处理也加上了。 首先可以很明确的一点,这个真没技术含量存在,只是需要点耐心。 LED 数字包含了左右各两条线,中间三条线,一共 7 条线。所以,为了能够更容易辨识,在写 demo 的时候,我直接这样写了。 <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span></div> 至于 .digital_1 .c1,.digital_1 .c2,.digital_1 .c3,.digital_1 .l1,.digital_1 .l2,.digital_2 .l1,.digital_2 .r2,.digital_3 .l1,.digital_3 .l2,.digital_4 .c1,.digital_4 .c3,.digital_4 .l2,.digital_5 .l2,.digital_5 .r1,.digital_6 .r1,.digital_7 .c2,.digital_7 .c3,.digital_7 .l1,.digital_7 .l2,.digital_9 .l2,.digital_0 .c2 { animation: changeDigital 200ms 0ms 1 ease-in forwards;} 这里使用了一个 animation 动画,并且时间是 @keyframes changeDigital { form { opacity: 1; } to { opacity: 0; }} 那么剩下来的就是最需要耐心的地方了,调整控制那 7 条线的位置,同时还要考虑每条线是带有斜角的,而且还稍微有点圆弧的感觉。带点圆弧的感觉那么直接使用 当我们要画三角的时候, 接着,需要注意横着的中间那根线,也就是 最后就是对每个元素的位置做调整,控制好大小位置就可以了,因为是使用定位的方式来操作,所以,调整起来还是很简单的。 .digital span { position: absolute; border-radius: 50vh; box-sizing: border-box;}.digital .c1,.digital .c2,.digital .c3 { height: 0; width: 26px; border-left: 4px solid transparent; border-right: 4px solid transparent;}.digital .c1 { top: 0; left: 0; border-top: 4px solid currentColor;}.digital .c2 { top: 50%; left: 0; margin-top: -2px;}.digital .c2:before,.digital .c2:after { content: ""; height: 0; width: 24px; border-left: 2px solid transparent; border-right: 2px solid transparent; box-sizing: border-box;}.digital .c2:before { position: absolute; top: 0; left: -3px; border-bottom: 2px solid currentColor;}.digital .c2:after { position: absolute; top: 2px; left: -3px; border-top: 2px solid currentColor;}.digital .c3 { bottom: 0; left: 0; border-bottom: 4px solid currentColor;}.digital .l1,.digital .l2 { height: 21px; width: 0; left: 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; border-left: 4px solid currentColor;}.digital .l1 { top: 1px; border-top-width: 4px;}.digital .l2 { top: 24px; border-bottom-width: 4px;}.digital .r1,.digital .r2 { height: 21px; width: 0; right: 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; border-right: 4px solid currentColor;}.digital .r1 { top: 1px; border-top-width: 4px;}.digital .r2 { top: 24px; border-bottom-width: 4px;} 做完这些,剩下的就是简单的对外层元素做点优化,比如稍微倾斜一点。 .digital { position: relative; width: 26px; height: 46px; margin-left: 10px; transform: skew(-6deg);} 哦,忘了说了,这里的边框颜色我选择使用 样式处理完之后,接着就是添加点 JS 来显示时钟了,只要把两个数字整出来放到不同的 完整代码如下: 样式: body { color: #393e4d; background-color: #f5f5f5;}@media screen and (prefers-color-scheme: dark) { body { color: #59f6fb; background-color: #1c1b1e; }}.digital { position: relative; width: 26px; height: 46px; margin-left: 10px; transform: skew(-6deg);}.digital span { position: absolute; border-radius: 50vh; box-sizing: border-box;}.digital .c1,.digital .c2,.digital .c3 { height: 0; width: 26px; border-left: 4px solid transparent; border-right: 4px solid transparent;}.digital .c1 { top: 0; left: 0; border-top: 4px solid currentColor;}.digital .c2 { top: 50%; left: 0; margin-top: -2px;}.digital .c2:before,.digital .c2:after { content: ""; height: 0; width: 24px; border-left: 2px solid transparent; border-right: 2px solid transparent; box-sizing: border-box;}.digital .c2:before { position: absolute; top: 0; left: -3px; border-bottom: 2px solid currentColor;}.digital .c2:after { position: absolute; top: 2px; left: -3px; border-top: 2px solid currentColor;}.digital .c3 { bottom: 0; left: 0; border-bottom: 4px solid currentColor;}.digital .l1,.digital .l2 { height: 21px; width: 0; left: 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; border-left: 4px solid currentColor;}.digital .l1 { top: 1px; border-top-width: 4px;}.digital .l2 { top: 24px; border-bottom-width: 4px;}.digital .r1,.digital .r2 { height: 21px; width: 0; right: 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; border-right: 4px solid currentColor;}.digital .r1 { top: 1px; border-top-width: 4px;}.digital .r2 { top: 24px; border-bottom-width: 4px;}.digital_1 .c1,.digital_1 .c2,.digital_1 .c3,.digital_1 .l1,.digital_1 .l2,.digital_2 .l1,.digital_2 .r2,.digital_3 .l1,.digital_3 .l2,.digital_4 .c1,.digital_4 .c3,.digital_4 .l2,.digital_5 .l2,.digital_5 .r1,.digital_6 .r1,.digital_7 .c2,.digital_7 .c3,.digital_7 .l1,.digital_7 .l2,.digital_9 .l2,.digital_0 .c2 { animation: changeDigital 200ms 0ms 1 ease-in forwards;}@keyframes changeDigital { form { opacity: 1; } to { opacity: 0; }}.clock { display: flex; justify-content: center; padding-top: 20px;}.gap { height: 46px; padding-left: 10px; font-size: 50px; font-weight: bold; line-height: 0.8; transform: skew(-6deg);} 结构: <div class="clock"> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div> <div class="gap">:</div> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div> <div class="gap">:</div> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div> <div class="digital digital_0"> <span class="c1"></span> <span class="c2"></span> <span class="c3"></span> <span class="l1"></span> <span class="l2"></span> <span class="r1"></span> <span class="r2"></span> </div></div> JS: var s1 = document.getElementsByClassName("digital")[5], s2 = document.getElementsByClassName("digital")[4], m1 = document.getElementsByClassName("digital")[3], m2 = document.getElementsByClassName("digital")[2], h1 = document.getElementsByClassName("digital")[1], h2 = document.getElementsByClassName("digital")[0];setInterval(function(){ var date = new Date(); var h = date.getHours(); var m = date.getMinutes(); var s = date.getSeconds(); if (h < 10) { h1.className = ''digital digital_'' + h; h2.className = ''digital digital_0''; } else { h1.className = ''digital digital_'' + parseInt(h%10); h2.className = ''digital digital_'' + parseInt(h/10); } if (m < 10) { m1.className = ''digital digital_'' + m; m2.className = ''digital digital_0''; } else { m1.className = ''digital digital_'' + parseInt(m%10); m2.className = ''digital digital_'' + parseInt(m/10); } if (s < 10) { s1.className = ''digital digital_'' + s; s2.className = ''digital digital_0''; } else { s1.className = ''digital digital_'' + parseInt(s%10); s2.className = ''digital digital_'' + parseInt(s/10); }}, 1000) 这样一个简易的 LED 数字时钟就大功告成啦。 |
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