テキストをコピーできるようにしました。
index.html
<!DOCTYPE HTML>
<html lang="ja">
<head>
<meta charset="utf-8">
<script src="bar.js"></script>
<link href="bar.css" rel="stylesheet">
<title>canvas描く対比横棒グラフ</title>
</head>
<body>
<div id="picture">
<canvas id="bar_area" width="800" height="400"></canvas>
<div class="blob1"></div>
</div>
<div class="bottom">
Aug/07/2023<p />
</div>
</body>
</html>
bar.css
/* ------------------------------------------------------------- */
/*
bar.css
Jun/03/2017
*/
/* ------------------------------------------------------------- */
#picture {
position: absolute;
top: 0px;
left: 0px;
}
.blob1{
position: absolute;
width: 500px;
height: 500px;
top: 0px;
left: 0px;
}
.bottom{
position: absolute;
width: 500px;
height: 500px;
top: 350px;
left: 0px;
}
/* ------------------------------------------------------------- */
bar.js
// -------------------------------------------------------------------------
// bar.js
//
// Aug/07/2023
// -------------------------------------------------------------------------
window.onload = ()=>
{
const file_json = "pacific.json"
fetch(file_json).then((response) => {
if(!response.ok) {
console.log('Read error!')
throw new Error('error')
}
console.log('Read ok!')
return response.text()
}).then((data) => {
const data_aa = JSON.parse(data)
bar_proc (data_aa)
})
}
// -------------------------------------------------------------------------
function bar_proc (data)
{
var bar = document.getElementById('bar_area')
var ctx = bar.getContext('2d')
ctx.font = "18px 'MS Pゴシック'"
ctx.strokeStyle = "black"
var yy = 30
ctx.strokeText("パシフィック",250,yy)
ctx.strokeText("勝利",420,yy)
ctx.strokeText("敗北",150,yy)
const xx = 250
yy = 70
ctx.strokeStyle = "blue"
var str_teams = ""
for (it in data)
{
const unit = data[it]
draw_win_proc (ctx,xx+120,yy-18,unit.win)
draw_lose_proc (ctx,xx-30,yy-18,unit.lose)
const pos_left = 190 - unit.lose * 5
const y_pos = yy - 18
const str_div_a = '<div style="position:absolute; top:' + y_pos + 'px; left:'
str_teams += str_div_a + pos_left + 'px;">' + unit.lose + '</div>'
str_teams += str_div_a + xx + 'px;">' + unit.team + '</div>'
const pos_right = 380 + unit.win * 5
str_teams += str_div_a + pos_right + 'px;">' + unit.win + '</div>'
yy += 50
}
document.querySelector(".blob1").innerHTML = str_teams
}
// -------------------------------------------------------------------------
function draw_win_proc (ctx,xx,yy,nn)
{
ctx.beginPath();
ctx.fillStyle = 'green'
ctx.rect (xx,yy,nn*5,20)
ctx.fill()
ctx.closePath()
ctx.stroke();
}
// -------------------------------------------------------------------------
function draw_lose_proc (ctx,xx,yy,nn)
{
ctx.beginPath();
ctx.fillStyle = 'red'
ctx.rect (xx-nn*5,yy,nn*5,20)
ctx.fill()
ctx.closePath()
ctx.stroke();
}
// -------------------------------------------------------------------------
pacific.json
[
{"team": "楽天","win": 33,"lose": 12},
{"team": "ソフトバンク","win": 32,"lose": 20},
{"team": "西武","win": 26,"lose": 21},
{"team": "オリックス","win": 22,"lose": 27},
{"team": "日本ハム","win": 21,"lose": 28},
{"team": "ロッテ","win": 15,"lose": 35}
]