출처 :<a href="http://danwhasoft.tistory.com/167" target="_blank" title="[http://danwhasoft.tistory.com/167]로 이동합니다.">&nbsp;http://danwhasoft.tistory.com/167</a><br>
<br><br><p><br></p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div><span style="color: #569cd6;">function</span>&nbsp;<span style="color: #dcdcaa;">isDateTime</span>(<span style="color: #9cdcfe;">str</span>){</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;yyyy-MM-dd&nbsp;HH:mm</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;형식만&nbsp;체크됨</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">var</span>&nbsp;<span style="color: #9cdcfe;">re</span>&nbsp;=<span style="color: #d16969;">&nbsp;/</span><span style="color: #dcdcaa;">^</span><span style="color: #ce9178;">(</span><span style="color: #d16969;">\d\d\d\d</span><span style="color: #ce9178;">)</span><span style="color: #d16969;">-</span><span style="color: #ce9178;">(</span><span style="color: #d16969;">0</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">1-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #d16969;">1</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-2</span><span style="color: #ce9178;">])</span><span style="color: #d16969;">-</span><span style="color: #ce9178;">(</span><span style="color: #d16969;">0</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">1-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">12</span><span style="color: #ce9178;">][</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #d16969;">3</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">01</span><span style="color: #ce9178;">])</span><span style="color: #d16969;">&nbsp;</span><span style="color: #ce9178;">(</span><span style="color: #d16969;">00</span><span style="color: #dcdcaa;">|</span><span style="color: #d16969;">0</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #d16969;">1</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #d16969;">2</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-3</span><span style="color: #ce9178;">])</span><span style="color: #d16969;">:</span><span style="color: #ce9178;">(</span><span style="color: #d16969;">0</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #dcdcaa;">|</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-5</span><span style="color: #ce9178;">][</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">])</span><span style="color: #dcdcaa;">$</span><span style="color: #d16969;">/</span><span style="color: #569cd6;">gm</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">var</span>&nbsp;<span style="color: #9cdcfe;">_array</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">re</span>.<span style="color: #dcdcaa;">exec</span>(<span style="color: #9cdcfe;">str</span>);</div><div>&nbsp;&nbsp;&nbsp;&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>(<span style="color: #9cdcfe;">_array</span>&nbsp;==&nbsp;<span style="color: #569cd6;">null</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #569cd6;">false</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>(<span style="color: #dcdcaa;">isDate</span>(<span style="color: #9cdcfe;">_array</span>[<span style="color: #b5cea8;">1</span>]&nbsp;+&nbsp;<span style="color: #9cdcfe;">_array</span>[<span style="color: #b5cea8;">2</span>]&nbsp;+&nbsp;<span style="color: #9cdcfe;">_array</span>[<span style="color: #b5cea8;">3</span>])&nbsp;!=&nbsp;<span style="color: #b5cea8;">0</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #569cd6;">false</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #569cd6;">true</span>;</div><div>}</div><div><span style="color: #569cd6;">function</span>&nbsp;<span style="color: #dcdcaa;">isDate</span>(<span style="color: #9cdcfe;">yyyymmdd</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;input</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;yyyymmdd,&nbsp;yyyy-mm-dd,&nbsp;yyyy/mm/dd</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;output</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #6a9955;">//&nbsp;0:&nbsp;정상,&nbsp;1:&nbsp;해당월의&nbsp;날짜&nbsp;넘음,&nbsp;2:&nbsp;존재하지&nbsp;않는&nbsp;달,&nbsp;3:&nbsp;포맷&nbsp;안맞음,&nbsp;4:&nbsp;-인&nbsp;날짜(?)</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">var</span>&nbsp;<span style="color: #9cdcfe;">y</span>,&nbsp;<span style="color: #9cdcfe;">m</span>,&nbsp;<span style="color: #9cdcfe;">d</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #9cdcfe;">length</span>&nbsp;==&nbsp;<span style="color: #b5cea8;">8</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(!<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">match</span>(<span style="color: #d16969;">/</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #d7ba7d;">{8}</span><span style="color: #d16969;">/</span><span style="color: #569cd6;">g</span>))</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">3</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">y</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">substring</span>(<span style="color: #b5cea8;">0</span>,&nbsp;<span style="color: #b5cea8;">4</span>);</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">m</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">substring</span>(<span style="color: #b5cea8;">4</span>,&nbsp;<span style="color: #b5cea8;">6</span>);</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">d</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">substring</span>(<span style="color: #b5cea8;">6</span>,&nbsp;<span style="color: #b5cea8;">8</span>);</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<span style="color: #c586c0;">else</span>&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #9cdcfe;">length</span>&nbsp;==&nbsp;<span style="color: #b5cea8;">10</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(!<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">match</span>(<span style="color: #d16969;">/</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #d7ba7d;">{4}</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">-/</span><span style="color: #ce9178;">][</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #d7ba7d;">{2}</span><span style="color: #ce9178;">[</span><span style="color: #d16969;">-/</span><span style="color: #ce9178;">][</span><span style="color: #d16969;">0-9</span><span style="color: #ce9178;">]</span><span style="color: #d7ba7d;">{2}</span><span style="color: #d16969;">/</span><span style="color: #569cd6;">g</span>))</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">3</span>;</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">y</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">split</span>(<span style="color: #ce9178;">'-'</span>)[<span style="color: #b5cea8;">0</span>];</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">m</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">split</span>(<span style="color: #ce9178;">'-'</span>)[<span style="color: #b5cea8;">1</span>];</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">d</span>&nbsp;=&nbsp;<span style="color: #9cdcfe;">yyyymmdd</span>.<span style="color: #dcdcaa;">split</span>(<span style="color: #ce9178;">'-'</span>)[<span style="color: #b5cea8;">2</span>];</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<span style="color: #c586c0;">else</span>&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">3</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><br><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #569cd6;">var</span>&nbsp;<span style="color: #9cdcfe;">limit_day</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">switch</span>&nbsp;(<span style="color: #dcdcaa;">eval</span>(<span style="color: #9cdcfe;">m</span>))&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">1</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">3</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">5</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">7</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">8</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">10</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">12</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">limit_day</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">31</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">break</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">2</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;((<span style="color: #9cdcfe;">y</span>&nbsp;-&nbsp;<span style="color: #b5cea8;">2008</span>)&nbsp;%&nbsp;<span style="color: #b5cea8;">4</span>&nbsp;==&nbsp;<span style="color: #b5cea8;">0</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">limit_day</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">29</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">else</span></div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">limit_day</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">28</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">break</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">4</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">6</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">9</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">case</span>&nbsp;<span style="color: #b5cea8;">11</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">limit_day</span>&nbsp;=&nbsp;<span style="color: #b5cea8;">30</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">break</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">default</span>:</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">2</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">break</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(<span style="color: #dcdcaa;">eval</span>(<span style="color: #9cdcfe;">d</span>)&nbsp;&gt;&nbsp;<span style="color: #9cdcfe;">limit_day</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">1</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">if</span>&nbsp;(<span style="color: #dcdcaa;">eval</span>(<span style="color: #9cdcfe;">d</span>)&nbsp;&lt;&nbsp;<span style="color: #b5cea8;">1</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">4</span>;</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">return</span>&nbsp;<span style="color: #b5cea8;">0</span>;</div><div>}</div></div><p><br></p><p><br></p><p><br></p>


Javascript IsDate 함수 date validation