回答編集履歴
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sample
test
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いろいろ課題が多いですが、UIだけ言えば
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radiocheckが2に変わったらtextcheckをdisabledにすればいいだけでは？
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# sample
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```javascript
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12
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<script>
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window.addEventListener('DOMContentLoaded', function(e){
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[].forEach.call(document.querySelectorAll('#form1 [name=radiocheck]'),function(x){
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x.addEventListener('change',function(e){
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document.querySelector('#form1 [name=textcheck]').disabled=(e.target.value=="2");
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});
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});
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});
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</script>
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<form id="form1">
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<input type = "text" name = "textcheck">
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<input type = "radio" name = "radiocheck" value = "1" checked> A
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<input type = "radio" name = "radiocheck" value = "2" > B
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</form>
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40
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41
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```
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