回答編集履歴
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\[ALL OPEN\], \[ALL CLOSE\] ボタンを追加
test
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@@ -2,7 +2,125 @@
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- [aria-hidden属性値をtoggle - JSFiddle](https://jsfiddle.net/Ltjy1uko/)
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- [aria-hidden属性値をtoggle - JSFiddle](https://jsfiddle.net/Ltjy1uko/1/)
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```HTML
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<style>
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.mask {
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color: black;
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background-color: white;
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cursor: pointer;
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}
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.mask[aria-hidden="true"] {
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color: black;
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background-color: black;
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}
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</style>
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</head>
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<body>
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<p id="mask-switch">
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<input type="button" id="all-open" value="ALL OPEN">
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<input type="button" id="all-close" value="ALL CLOSE">
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</p>
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<h3>神経系とは</h3>
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<p>神経系とは、中枢では<span class="mask" aria-hidden="true">脳と脊髄</span>、末梢では<span class="mask" aria-hidden="true">運動</span>神経・<span class="mask" aria-hidden="true">感覚</span>神経・<span class="mask" aria-hidden="true">自律</span>神経という神経組織からなる。</p>
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<script>
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'use strict';
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document.querySelectorAll('.mask').forEach(function (element) {
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element.addEventListener('click', function (event) {
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var element = event.target;
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element.setAttribute('aria-hidden', element.getAttribute('aria-hidden') === 'true' ? 'false' : 'true');
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}, false);
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});
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document.getElementById('mask-switch').addEventListener('click', function handleClick (event) {
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var input = event.target, ariaHidden;
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switch (input.id) {
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case 'all-open':
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ariaHidden = 'false';
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break;
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case 'all-close':
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ariaHidden = 'true';
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break;
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}
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if (ariaHidden) {
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for (var elements = document.querySelectorAll('.mask'), i = 0, len = elements.length; i < len; ++i) {
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console.log(elements[i]);
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elements[i].setAttribute('aria-hidden', ariaHidden);
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}
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}
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}, false);
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</script>
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```
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**(2017/0/02 10:11追記)**
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[ALL OPEN], [ALL CLOSE] ボタンを追加しました。
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124
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