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copy-per-line.html
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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<title>クリップボード行ごとコピー支援</title>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<style type='text/css'>
h1 { font-size: 1.5em; }
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script language='javascript'>
function html_escape(str) {
return [ ['&', 'amp'], ['<', 'lt'], ['>', 'gt'], ['"', 'quot'], ["'", 'apos'] ].reduce(
(curstr, [char, entname]) => curstr.replace(new RegExp(char, 'g'), `&${entname};`),
str
);
}
$(function() {
console.log('loaded');
$('#copy_content_button').on('click', () => {
const content = $('#copy_content').val();
console.log('content: ', content);
const ul = $('#per_line_result');
ul.empty();
for ( const line of content.split(/\n/) ) {
if ( line.match(/^\s*$/) ) continue;
console.log('line', line);
const li = $('<li></li>');
const line_copy_button = $('<button></button>');
line_copy_button.attr('class', 'line_copy_button');
line_copy_button.append('コピー');
li.append(line_copy_button);
const line_content = $('<span></span>');
line_content.attr('class', 'line_content');
line_content.append(html_escape(line));
li.append(line_content);
const line_hidden = $('<input type="input"></input>');
line_hidden.val(line);
line_hidden.attr('class', 'line_hidden');
line_hidden.attr('readonly', 'readonly');
line_hidden.css('display', 'none');
li.append(line_hidden);
ul.append(li);
}
$('ul#per_line_result li').each(function(){
const $li = $(this);
const $input = $li.find('input.line_hidden');
$li.find('.line_copy_button').on('click', () => {
$input.css('display', 'inline');
$input[0].select();
document.execCommand('copy');
$input.css('display', 'none');
$li.append('<span class="execinfo" style="color: red;">コピーしたよ</span>');
});
});
});
});
</script>
</head>
<body>
<h1>クリップボード行ごとコピー支援</h1>
<textarea id="copy_content" rows="15" cols="70">
aaa
bbb
ccc
</textarea>
<div><button id="copy_content_button">上記を行ごとにコピーできるようにする！</button></div>
<ul id="per_line_result">
</ul>
</body>
</html>