回答編集履歴
1
追記
answer
CHANGED
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@@ -11,4 +11,32 @@
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11
11
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<input type="radio" id="country_kbn1" name="country_kbn" value="1"> 日本
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12
12
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<input type="radio" id="country_kbn2" name="country_kbn" value="2"> 海外
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13
13
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<input type="text" name="txt_country_name" size="30" maxlength="100" value="">
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14
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+
```
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15
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+
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16
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+
# 追記
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17
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こういうこと？
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18
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```javascript
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19
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HTMLElement.prototype.trigger=function(eventStr){
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20
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if (document.createEvent) {
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21
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var e = document.createEvent("HTMLEvents");
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22
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e.initEvent(eventStr, true, true );
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23
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return this.dispatchEvent(e);
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24
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} else {
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25
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var e = document.createEventObject();
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26
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return this.fireEvent("on"+eventStr, e);
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27
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}
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28
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};
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29
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window.addEventListener('DOMContentLoaded', function(e){
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30
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[].forEach.call(document.querySelectorAll('input[name="country_kbn"]'),function(x){
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31
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x.addEventListener('change',function(e){
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32
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document.querySelector('input[name="txt_country_name"]').style.display=(e.target.value==1?'none':'inline-block');
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33
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});
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34
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if(x.checked) x.trigger('change');
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35
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});
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36
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});
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37
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```
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38
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```HTML
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39
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<input type="radio" id="country_kbn1" name="country_kbn" value="1" checked> 日本
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40
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<input type="radio" id="country_kbn2" name="country_kbn" value="2"> 海外
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41
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<input type="text" name="txt_country_name" size="30" maxlength="100" value="">
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14
42
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```
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