回答編集履歴
1
追記
answer
CHANGED
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@@ -26,4 +26,56 @@
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26
26
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<option value="green">グリーン</option>
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27
27
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</select>
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28
28
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<div class="change blue">色よ変われ！</div>
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29
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+
```
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30
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# 追記
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31
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.kokomo:beforeの色を変える
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32
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33
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```css
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34
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.red{ background-Color: red;}
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35
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.blue{ background-Color: blue;}
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36
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.green{ background-Color:green;}
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37
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.beforered:before{background-Color: red;}
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38
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.beforeblue:before{ background-Color: blue;}
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39
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.beforegreen:before{ background-Color:green;}
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40
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41
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.box {margin: 20px;}
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42
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.change {
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color: #fff;
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font-weight: bold;
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45
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width: 200px;
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46
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margin: 20px;
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47
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}
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.kokomo {
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color: #000000;
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50
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margin: 20px;
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51
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font-weight: bold;
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52
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}
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.kokomo:before {
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content: '';
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position: absolute;
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56
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top: 0;
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width: 20px;
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58
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height: 20px;
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59
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border-radius: 50%;
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60
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}
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61
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```
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62
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```javascript
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63
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$(function(){
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64
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$('select').on('change',function(){
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65
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$('.change').removeClass('red blue green').addClass($(this).val());
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66
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$('.kokomo').removeClass('beforered beforeblue beforegreen').addClass("before"+$(this).val());
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67
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});
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68
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});
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69
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```
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70
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```HTML
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71
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<div class="box">
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72
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<select class="select_color" name="onamae" data-required="no" data-type="select">
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73
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<option value="blue">ブルー</option>
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74
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<option value="red">レッド</option>
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75
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<option value="green">グリーン</option>
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76
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</select>
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77
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</div>
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78
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79
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<div class="change blue">ここの色が変わる！</div>
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80
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<div class="kokomo beforeblue">ここも</div>
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29
81
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```
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