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这篇文章主要介绍js如何实现自定义进度条效果,文中介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们一定要看完!
效果图:
代码如下:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Staged progress bar</title> <style type="text/css"> *{margin:0;padding:0;} html,body{height:100%;} ul{list-style:none;} .cf:after{content:"";display:block;clear:both;height: 0;} #bar{height:20px;margin:100px 10px; margin-left: 50px} #bar div{float:left;position:relative;} #bar .staged, #bar .progress{border-color:#4CA8FF;} #bar .staged i{position:relative;overflow:hidden;display:block;width:inherit;height:inherit;} #bar .staged i:before{content:"";display:block;width:0;height:inherit;border-radius:50%;} #bar .progress {width:120px;height:inherit;margin-left:-4px;z-index:1;border-style:solid;border-width:2px 0;} #bar .progress:nth-child(2) i{border-left-width:2px;border-top-left-radius:6px;border-bottom-left-radius:6px;} #bar .progress:nth-child(2){border-left-width:2px;border-top-left-radius:10px;border-bottom-left-radius:10px;} #bar .progress:last-child{border-right-width:2px;border-top-right-radius:10px;border-bottom-right-radius:10px;} #bar .progress i{width:0;height:inherit;display:block;border-radius:0 10px 10px 0;position:relative;font-style:normal;} #bar .progress, #bar .staged{background:#7d7d7d;} #bar .sp i:before, #bar .progress i{background:#4CA8FF;} #bar .staged:not(:first-child){margin-left:-4px; } #bar .staged:before{position:absolute;content:attr(data-text);width:inherit;height:inherit;top:90%;left:0;} #bar .staged:after{content:attr(data-value);color:#fff;width:inherit;height:inherit;position:absolute;top:0;left:0;} #bar .sp i:before{width:100%;transition:width 1s;} .msg:before, .msg:after{display:block;position:absolute;border-style:solid;border-color:#ccc;background:#fff;top:30px;} .msg:before{content:attr(data-text);width:200px;height:40px;line-height:40px;font-size:12px;text-align:center;border-radius:4px;border-width:1px;top:-68px;left:calc(100% - 114px);} .msg:after{content:"";width:14px;height:14px;transform:rotate(45deg);border-width:0 1px 1px 0;top:-34px;left:calc(100% - 20px);} </style> </head> <body> <div id="bar" class="cf" data-value="8000" data-text="还有 [number] 点进度加载完成"> <div class="staged sp" data-value="0" ><i></i></div> <div class="progress"><i></i></div> <div class="staged" data-value="200" "><i></i></div> <div class="progress"><i></i></div> <div class="staged" data-value="1000" ><i></i></div> <div class="progress"><i></i></div> <div class="staged" data-value="5000" ><i></i></div> <div class="progress"><i></i></div> <div class="staged" data-value="10000" ><i></i></div> <div class="progress"><i></i></div> </div> <script type="text/javascript"> var progressBar = (function(){ var $ = function(sele){ return document.querySelectorAll(sele); } return function(a){ var getValue = function(obj,attr){ return Number(obj.getAttribute(a.value)); } var box = $(a.box)[0]; var value = getValue(box); var text = box.getAttribute(a.text); var staged = $(a.staged); var progress = $(a.progress); var i = 0, index = 0, num = 0, numV = 0, n = 1, af_index = 0, timeout = 0, stopAm = null; var af = function(fn){ if(!requestAnimationFrame || !cancelAnimationFrame){ clearTimeout(af_index); af_index = setTimeout(fn, 1000/60); } else{ cancelAnimationFrame(af_index); af_index = requestAnimationFrame(fn); } } var setMsg = function(){ var msg = progress[index]; if(a.note){ var arr = text.split(a.note); text = arr[0] + n + arr[1]; } msg.setAttribute("data-text", text); msg.className = a.msg; } var animation = function(){ if(i == 0){ if(staged.length == index + 1){ numV = value * 2; } else numV = getValue(staged[index + 1]); if(n == 0) { progress[index].style.width = "1%"; return }; if(n < 0 && staged.length > index + 1){ n = numV - value; if(Number(progress[index].style.width.split("%")[0])<5) progress[index].style.width = "3%"; setMsg(); return; } } num = Math.ceil(++i * numV / 100); if(num > value){ num = value; //console.log(num) n = numV - num; if(n > 0){ if(staged.length > index + 1) setMsg(); return; } } if(i == 100){ staged[index + 1].className += " " + a.stagedProgress; } if(i > 105){ //105% 宽,自己根据样式调整。 num = numV; index++; i = 0; timeout = setTimeout(function(){ af(animation); clearTimeout(timeout); }, a.stagedSleep); return; } progress[index].style.width = i + "%"; af(animation); } animation() } })(); progressBar({ box : "#bar", text : "data-text", // box 的属性 note : "[number]", // box 的属性 (可以省略,计算好直接写入提示语句。); msg : "msg", staged : ".staged", progress : ".progress i", stagedProgress : "sp", value : "data-value", stagedSleep : "900", sleep : "3000" }); </script> </body> </html>
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