質問編集履歴
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コード追記
test
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File without changes
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test
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@@ -6,11 +6,61 @@
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[https://jsfiddle.net/vL5Lmmtc/](https://jsfiddle.net/vL5Lmmtc/)
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9
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```html
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10
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11
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<select class="select_color" name="onamae" data-required="no" data-type="select">
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<option value="blue">ブルー</option>
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<option value="red">レッド</option>
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<option value="green">グリーン</option>
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</select>
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<div class="change">色よ変われ！</div>
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```
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```javascript
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<sctipt>
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$('select').change(function(){
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var num = document.onamae.selectedIndex;
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var str = document.onamae.options[num].value;
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document.getElementsByClassName("change")[0].css('background','str')
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});
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</script>
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```
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11
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または
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47
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または下記のように書けば１回は変更できるのですけれど、それじゃダメなのです。
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[https://jsfiddle.net/23fgea8L/](https://jsfiddle.net/23fgea8L/)
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```javascript
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<sctipt>
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$('select').change(function(){
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$(".change").css('background-color','#f00')
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});
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</script>
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```
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