回答編集履歴
1
追記
answer
CHANGED
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@@ -22,4 +22,26 @@
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22
22
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console.log(birthday+":"+(birthday.match(reg)?"ok":"ng"));
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23
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});
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24
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```
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25
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-
あとは条件次第
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25
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あとは条件次第
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26
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+
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27
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# 追記
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28
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+
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29
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> セパレータは/のみで、1992/01/01という形式のみ許可
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30
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+
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31
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という条件で
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32
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```javascript
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33
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<script>
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34
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window.addEventListener('DOMContentLoaded', function(e){
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35
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document.querySelector('[name=birthday]').addEventListener('change',function(e){
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36
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var v=e.target.value;
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var b=new Date(v);
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38
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var y=b.getFullYear();
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39
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var m=b.getMonth()+1;
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var d=b.getDate();
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var reg=new RegExp("^"+y+"/"+(m+100).toString().substr(-2)+"/"+(d+100).toString().substr(-2)+"$");
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document.querySelector('#birthday_err').textContent=(v=="" || v.match(reg))?"":"err";
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});
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});
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</script>
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<input type="text" name="birthday" pattern="\d{4}/\d{2}/\d{2}" placeholder="YYYY/MM/DD" size="10" required> <span id="birthday_err"></span>
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47
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```
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