原生js实现折线图图表效果代码-html代码-BFW代码库

原生js实现折线图图表效果代码

代码语言：html

所属分类：图表

代码描述：原生js实现折线图图表效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >
<head>
  <meta charset="UTF-8">

<style>
    body {
  margin: 0;
  overflow: hidden;
  background: #152B39;
  font-family: Courier, monospace;
  font-size: 14px;
  color:#ccc; 
}

.wrapper {
  display: block;
  margin: 5em auto;
  border: 1px solid #555;
  width: 700px;
  height: 350px;
  position: relative;
}
p{text-align:center;}
.label {
  height: 1em;
  padding: .3em;
  background: rgba(255, 255, 255, .8);
  position: absolute;
  display: none;
  color:#333;
  
}
</style>
</head>
<body>
<!-- partial:index.partial.html -->
<div class="wrapper">
  <canvas id='c'></canvas>
  <div class="label">text</div>
</div>
<p>Please mouse over the dots</p>
<!-- partial -->
  <script >
      var label = document.querySelector(".label");
var c = document.getElementById("c");
var ctx = c.getContext("2d");
var cw = c.width = 700;
var ch = c.height = 350;
var cx = cw / 2,
  cy = ch / 2;
var rad = Math.PI / 180;
var frames = 0;

ctx.lineWidth = 1;
ctx.strokeStyle = "#999";
ctx.fillStyle = "#ccc";
ctx.font = "1.........完整代码请登录后点击上方下载按钮下载查看