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chcount.html
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<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,minimum-scale=1,maximum-scale=1">
<title>文字数カウント・リターンズ</title>
<style>
html {
background-color: #ccc;
}
body {
max-width: 800px;
margin: 0 auto;
padding: 2px 12px;
background-color: #fff;
color: #333;
}
#textarea {
box-sizing: border-box;
width: 100%;
min-height: 12em;
padding: 8px;
font-size: 16px;
line-height: 1.5;
color: #000;
}
#input-actions {
text-align: right;
}
.notice {
font-size: 85%;
color: #999;
}
#result {
margin: 0 auto;
border-collapse: collapse;
}
#result tr {
border-bottom: 1px solid #ccc;
}
#result th {
padding: 2px;
text-align: left;
color: #666;
font-weight: normal;
}
#result td.value {
min-width: 3em;
padding: 2px 8px;
text-align: right;
color: #328d4d;
font-weight: bold;
}
#result td.actions {
padding: 2px 12px;
}
#result td.actions button {
background-color: transparent;
border: none;
cursor: pointer;
outline: none;
padding: 0;
appearance: none;
color: #5793cc;
font-size: 11px;
font-weight: bold;
}
</style>
</head>
<body>
<h1>文字数カウント・リターンズ</h1>
<textarea id="textarea" placeholder="テキストを入力"></textarea>
<div id="input-actions">
<button id="action-paste">貼り付け</button>
<button id="action-clear">クリア</button>
</div>
<table id="result">
<tr id="field1">
<th>■文字数（スペース込み）</th>
<td class="value"><span>0</span></td>
<td class="actions"><button>コピー</button></td>
</tr>
<tr id="field2">
<th>■文字数（スペース無視）</th>
<td class="value"><span>0</span></td>
<td class="actions"><button>コピー</button></td>
</tr>
<tr id="field3">
<th>■行数</th>
<td class="value"><span>0</span></td>
<td class="actions"><button>コピー</button></td>
</tr>
<tr id="field4">
<th>■段落数</th>
<td class="value"><span>0</span></td>
<td class="actions"><button>コピー</button></td>
</tr>
</table>
<p class="notice">※オリジナルの「文字数カウント」（旧URL: http://www1.odn.ne.jp/megukuma/count.htm）サービスとは無関係です。</p>
<script>
(function () {
const textarea = document.querySelector("#textarea");
const output1 = document.querySelector("#field1 span");
const output2 = document.querySelector("#field2 span");
const output3 = document.querySelector("#field3 span");
const output4 = document.querySelector("#field4 span");
document.querySelector("#action-paste").addEventListener("click", async function (event) {
const value = await navigator.clipboard.readText();
textarea.value = value;
update(textarea);
});
document.querySelector("#action-clear").addEventListener("click", async function (event) {
textarea.value = "";
update(textarea);
});
textarea.addEventListener("input", function (event) {
update(this);
});
for (const button of document.querySelectorAll("#result .actions button")) {
button.addEventListener("click", function (event) {
const value = this.closest("tr").querySelector(".value span").innerText;
navigator.clipboard.writeText(value);
});
}
function update(textarea) {
const text = (textarea.value || "").trim();
output1.innerText = "" + +(text.length);
output2.innerText = "" + +(text.replace(/\s/g, "").length);
output3.innerText = "" + +(text == "" ? 0 : text.split("\n").length);
output4.innerText = "" + +(text == "" ? 0 : text.split(/\n{2,}/).length);
}
update(this);
})();
</script>
</body>
</html>