回答編集履歴
1
情報の追加。
answer
CHANGED
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@@ -17,4 +17,34 @@
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17
17
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$options.removeClass( 'sl' ).filter( ':selected' ).addClass( 'sl' );
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18
18
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} );
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} );
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20
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-
```**動くサンプル：**[https://jsfiddle.net/h9q78v8c/1/](https://jsfiddle.net/h9q78v8c/1/)
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20
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+
```**動くサンプル：**[https://jsfiddle.net/h9q78v8c/1/](https://jsfiddle.net/h9q78v8c/1/)
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21
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+
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22
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+
---
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23
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+
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24
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**追記：**
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25
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+
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26
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+
こういうことか。
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27
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+
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28
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+
```JavaScript
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29
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+
$( function() {
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30
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for ( let i = 1 ; i <= 64; i++ ) {
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31
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let _i = ( '0' + i ).slice( -2 );
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32
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$( '#year' ).append( '<option value="' + _i + '">' + _i + '</option>' );
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33
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}
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34
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for ( let i = 1 ; i <= 12; i++ ) {
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35
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let _i = ( '0' + i ).slice( -2 );
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36
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$( '#month' ).append( '<option value="' + _i + '">' + _i + '</option>' );
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37
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}
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38
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for ( let i = 1 ; i <= 31; i++ ) {
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39
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let _i = ( '0' + i ).slice( -2 );
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40
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$( '#day' ).append( '<option value="' + _i + '">' + _i + '</option>' );
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41
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}
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42
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$( 'select' ).on('change', function() {
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43
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if ( $( this ).val() ) {
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44
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$( this ).addClass( 'sl' );
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45
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} else {
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46
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$( this ).removeClass( 'sl' );
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47
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}
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48
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} );
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49
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} );
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50
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```**動くサンプル：**[https://jsfiddle.net/h9q78v8c/2/](https://jsfiddle.net/h9q78v8c/2/)
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