下記のコードは、アナログ時計の外周を、1分ごとに"和暦"と"西暦"に切り変わるものですが、
問題箇所が2点あるのです。
1点目は、暦は"toLocaleDateString"を使っていますが、西暦に比べて和暦の方が重い(遅い)
のです。原因は、何でしょうか。
移動速度(step)は、0.06に設定してあります。
2点目は、仮に現在が"平成99年(9999年)だとすると、来年は"平成100年(10000年)"となり、
文字数が1つ増えます。このように"和暦"や"西暦"の年の桁が増加するごとに、1文字抜け落ちて
表示されます。
この問題を解決するには、コード内の『var TodaysDate = " ";』の" "内のスペースを
増やすだけでいいのですが、何か式を使ってできないでしょうか。
<html>
<head>
<meta charset="utf-8" />
<title>１分おき日英切り替え</title>
</head>
<body>
<div id="clock">
<div id="Od" style="position:absolute;top:0px;left:0px">
<div style="position:relative">
</div>
</div>
<div id="Of" style="position:absolute;top:0px;left:0px">
<div style="position:relative">
</div>
</div>
<div id="Oh" style="position:absolute;top:0px;left:0px">
<div style="position:relative">
</div>
</div>
<div id="Om" style="position:absolute;top:0px;left:0px">
<div style="position:relative">
</div>
</div>
<div id="Os" style="position:absolute;top:0px;left:0px">
<div style="position:relative">
</div>
</div>
</div>
<script type="text/javascript">
(function(){
"use strict";
function $(sel)
{
return document.getElementById(sel);
}
function $$(sel)
{
if (typeof document.getElementsByClassName === 'undefined')
{
return document.getElementsByName(sel);
}
return document.getElementsByClassName(sel);
}
var dCol = '00ff00', //date colour.
sCol = 'ff0000', //seconds colour.
mCol = '000000', //minutes colour.
hCol = '000000', //hours colour.
fCol = '0000ff', //face color
ClockHeight = 40,
ClockWidth = 40,
ClockFromMouseY = 0,
ClockFromMouseX = 100;
var TodaysDate = " ";
/*最大文字数を5文字に設定(""内に半角で、5文字分スペースを作る)。*/
var D = TodaysDate.split('');
var H = '...';
H = H.split('');
var M = '....';
M = M.split('');
var S = '.....';
S = S.split('');
var Face = '1 2 3 4 5 6 7 8 9 10 11 12',
font = 'Helvetica, Arial, sans-serif',
size = 1,
speed = 0.6;
Face = Face.split(' ');
var n = Face.length;
var a = size * 10;
var ymouse = 0,
xmouse = 0,
scrll = 0,
props = '<span style="font-family:' + font + ';font-size:' + size + 'em; color:#' + fCol + '">';
var Split = 360 / n;
var HandHeight = ClockHeight / 4.5;
var HandWidth = ClockWidth / 4.5;
var HandY = -7,
HandX = -2.5,
step = 0.06,
currStep = 0,
y = [],
x = [],
Y = [],
X = [],
Dy = [],
Dx = [],
DY = [],
DX = [];
var i;
for (i = 0; i < n; i++)
{
y[i] = 0;
x[i] = 0;
Y[i] = 0;
X[i] = 0;
}
for (i = 0; i < D.length; i++)
{
Dy[i] = 0;
Dx[i] = 0;
DY[i] = 0;
DX[i] = 0;
}
var wrapper = $('clock');
var html = '';
// Face wrapper
html = '';
for (i = 0; i < n; i++)
{
html += '<div class="Face" name="Face" style="position:absolute;top:0px;left:0;height:' + a + ';width:' + a + ';text-align:center">' + props + Face[i] + '</span></div>';
}
$('Of').children[0].innerHTML = html;
// Hours wrapper
html = '';
for (i = 0; i < H.length; i++)
{
html += '<div class="Hours" name="Hours" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:' + hCol + ';text-align:center;font-weight:bold">' + H[i] + '</div>';
}
$('Oh').children[0].innerHTML = html;
// Minute wrapper
html = '';
for (i = 0; i < M.length; i++)
{
html += '<div class="Minutes" name="Minutes" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:' + mCol + ';text-align:center;font-weight:bold">' + M[i] + '</div>';
}
$('Om').children[0].innerHTML = html;
// Seconds wrapper
html = '';
for (i = 0; i < S.length; i++)
{
html += '<div class="Seconds" name="Seconds" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:' + sCol + ';text-align:center;font-weight:bold">' + S[i] + '</div>';
}
$('Os').children[0].innerHTML = html;
// Mouse move event handler
function Mouse(evnt)
{
if (typeof evnt === 'undefined')
{
ymouse = event.Y + ClockFromMouseY;
xmouse = event.X + ClockFromMouseX;
}
else
{
ymouse = evnt.clientY + ClockFromMouseY;
xmouse = evnt.clientX + ClockFromMouseX;
}
}
document.onmousemove = Mouse;
function ClockAndAssign()
{
var date = new Date(),
mt = date.getMinutes();
if( mt%2==0 ){
var date = new Date();
TodaysDate = date.toLocaleDateString("ja-JP-u-ca-japanese", { era: "long", year: "numeric" }).replace(/\u200e/g, "").replace(" ", "");
} else{
TodaysDate = date.toLocaleDateString("en-US", { era: "long", year: "numeric" }).replace(/\u200e/g, "") + "年";
}
var D = TodaysDate.split('');
var props2 = '<span style="font-family:' + font + ';font-size:' + size + 'em; color:#' + dCol + '">';
var Dsplit = 360 / D.length;
// Date wrapper
html = '';
for (i = 0; i < D.length; i++){
html += '<div class="Date" name="Date" style="position:absolute;top:0px;left:0;height:' + a + ';width:' + a + ';text-align:center">' + props2 + D[i] + '</span></div>';
}
$('Od').children[0].innerHTML = html;
var time = new Date();
var secs = time.getSeconds();
var sec = -1.57 + Math.PI * secs / 30;
var mins = time.getMinutes();
var min = -1.57 + Math.PI * mins / 30;
var hr = time.getHours();
var hrs = -1.575 + Math.PI * hr / 6 + Math.PI * parseInt(time.getMinutes(), 10) / 360;
$('Od').style.top = window.document.body.scrollTop;
$('Of').style.top = window.document.body.scrollTop;
$('Oh').style.top = window.document.body.scrollTop;
$('Om').style.top = window.document.body.scrollTop;
$('Os').style.top = window.document.body.scrollTop;
for (i = 0; i < n; i++)
{
var F = $$('Face')[i];
F.style.top = y[i] + ClockHeight * Math.sin(-1.0471 + i * Split * Math.PI / 180) + scrll;
F.style.left = x[i] + ClockWidth * Math.cos(-1.0471 + i * Split * Math.PI / 180);
}
for (i = 0; i < H.length; i++)
{
var HL = $$('Hours')[i];
HL.style.top = y[i] + HandY + (i * HandHeight) * Math.sin(hrs) + scrll;
HL.style.left = x[i] + HandX + (i * HandWidth) * Math.cos(hrs);
}
for (i = 0; i < M.length; i++)
{
var ML = $$('Minutes')[i].style;
ML.top = y[i] + HandY + (i * HandHeight) * Math.sin(min) + scrll;
ML.left = x[i] + HandX + (i * HandWidth) * Math.cos(min);
}
for (i = 0; i < S.length; i++)
{
var SL = $$('Seconds')[i].style;
SL.top = y[i] + HandY + (i * HandHeight) * Math.sin(sec) + scrll;
SL.left = x[i] + HandX + (i * HandWidth) * Math.cos(sec);
}
for (i = 0; i < D.length; i++)
{
var DL = $$('Date')[i].style;
DL.top = Dy[i] + ClockHeight * 1.5 * Math.sin(currStep + i * Dsplit * Math.PI / 180) + scrll;
DL.left = Dx[i] + ClockWidth * 1.5 * Math.cos(currStep + i * Dsplit * Math.PI / 180);
}
currStep -= step;
}
function Delay()
{
scrll = 0;
Dy[0] = Math.round(DY[0] += ((ymouse) - DY[0]) * speed);
Dx[0] = Math.round(DX[0] += ((xmouse) - DX[0]) * speed);
for (i = 1; i < D.length; i++) {
Dy[i] = Math.round(DY[i] += (Dy[i - 1] - DY[i]) * speed);
Dx[i] = Math.round(DX[i] += (Dx[i - 1] - DX[i]) * speed);
}
y[0] = Math.round(Y[0] += ((ymouse) - Y[0]) * speed);
x[0] = Math.round(X[0] += ((xmouse) - X[0]) * speed);
for (i = 1; i < n; i++) {
y[i] = Math.round(Y[i] += (y[i - 1] - Y[i]) * speed);
x[i] = Math.round(X[i] += (x[i - 1] - X[i]) * speed);
}
ClockAndAssign();
setTimeout(Delay, 20);
}
Delay();
}());
</script>
</body>
</html>