回答編集履歴
1
className 処理の簡略化
test
CHANGED
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@@ -1,6 +1,6 @@
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`
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`arguments` を `Array#slice` すれば、第二引数以降の可変長引数を処理できると思います。
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(
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(2015/08/04 21:19 className 処理を簡略化できた為、修正しました。)
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@@ -16,41 +16,17 @@
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var classList = element.classList,
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classTokenList = Array.prototype.slice.call(arguments, 1)
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classTokenList = Array.prototype.slice.call(arguments, 1);
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currentClassName, i;
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if (classList && classList.add) {
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if (classList && typeof classList.add === 'function') {
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classList.add.apply(classList, classTokenList);
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} else {
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currentClassName = element.className;
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i = classTokenList.length;
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while (i--) {
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element.className += ' ' + classTokenList.join(' ');
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if ((' ' + currentClassName + ' ').indexOf(className + ' ') === -1) {
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currentClassName += className;
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}
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}
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element.className = currentClassName;
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}
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