回答編集履歴
1
追記
test
CHANGED
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@@ -47,3 +47,47 @@
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47
47
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```
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48
48
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49
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あとは条件次第
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50
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51
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52
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53
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# 追記
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54
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55
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56
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57
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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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58
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60
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という条件で
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62
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63
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```javascript
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64
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65
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<script>
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66
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67
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window.addEventListener('DOMContentLoaded', function(e){
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68
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69
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document.querySelector('[name=birthday]').addEventListener('change',function(e){
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70
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var v=e.target.value;
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72
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var b=new Date(v);
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74
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75
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var y=b.getFullYear();
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76
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77
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var m=b.getMonth()+1;
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78
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var d=b.getDate();
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80
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var reg=new RegExp("^"+y+"/"+(m+100).toString().substr(-2)+"/"+(d+100).toString().substr(-2)+"$");
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82
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document.querySelector('#birthday_err').textContent=(v=="" || v.match(reg))?"":"err";
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84
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85
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});
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86
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});
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89
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</script>
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90
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91
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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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92
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```
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