回答編集履歴
1
不要な宣言があったので修正
test
CHANGED
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@@ -1,8 +1,6 @@
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```JavaScript
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function addStyleRule(selector, styleRule, style) {
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-
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var sheet, i;
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if (!style) {
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6
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@@ -14,7 +12,7 @@
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sheet = style.sheet;
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var sheet = style.sheet;
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sheet.insertRule(selector + '{' + styleRule + '}', sheet.cssRules.length);
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