回答編集履歴
1
ミスがあったため修正。
test
CHANGED
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@@ -35,3 +35,69 @@
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} );
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```**動くサンプル：**[https://jsfiddle.net/sh8pnxgj/](https://jsfiddle.net/sh8pnxgj/)
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---
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**追記：**
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要件を満たしていなかったので修正。
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```HTML
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58
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<select id="aaa" name="example1" size="3">
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<option value="sample1" selected>sample1</option>
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<option value="sample2">sample2</option>
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<option value="sample3">sample3</option>
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</select>
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<select id="bbb" name="example2" size="3">
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<option value="sample4">sample4</option>
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<option value="sample5" selected>sample5</option>
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<option value="sample6">sample6</option>
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</select>
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<select id="ccc" name="example2" size="3">
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<option value="sample4">sample4</option>
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<option value="sample5" selected>sample5</option>
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<option value="sample6">sample6</option>
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</select>
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```
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```JavaScript
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$( function() {
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$( 'select' ).on( 'change', function(){
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$( 'select:not(#' + $( this ).attr( 'id' ) + ') option:selected' ).prop( 'selected', false );
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} ).eq( 0 ).trigger( 'change' );
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} );
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```**動くサンプル：**[https://jsfiddle.net/sh8pnxgj/1/](https://jsfiddle.net/sh8pnxgj/1/)
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