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    <p>Thanks to @mplungjan. I have upvoted that answer.</p> <p>@mplungjan approach (first suggested) is listed in <a href="http://jsfiddle.net/Lijo/uzSU6/7/" rel="nofollow noreferrer">http://jsfiddle.net/Lijo/uzSU6/7/</a>. This was failed in IE8 for one scenario - <a href="http://jsfiddle.net/Lijo/uzSU6/12/" rel="nofollow noreferrer">http://jsfiddle.net/Lijo/uzSU6/12/</a>.</p> <p>So I have used a slightly different approach after referring <a href="https://stackoverflow.com/questions/5812220/test-if-date-is-valid">How to validate a date?</a>. See it here <a href="http://jsfiddle.net/Lijo/uzSU6/20/" rel="nofollow noreferrer">http://jsfiddle.net/Lijo/uzSU6/20/</a> </p> <p><strong>EDIT</strong></p> <p>Please refer <a href="http://jsfiddle.net/uzSU6/37/" rel="nofollow noreferrer">http://jsfiddle.net/uzSU6/37/</a> for scenarios that handle blank spaces</p> <p>Feel free to give your suggestions/ challenges with this approach.</p> <p><strong>References</strong></p> <ol> <li><a href="https://stackoverflow.com/questions/13911311/check-whether-white-spaces-exist-without-using-trim">Check whether white spaces exist without using trim</a></li> <li><a href="https://stackoverflow.com/questions/359494/javascript-vs-does-it-matter-which-equal-operator-i-use/">Which equals operator (== vs ===) should be used in JavaScript comparisons?</a></li> <li><a href="https://stackoverflow.com/questions/5812220/test-if-date-is-valid">How to validate a date?</a></li> </ol> <p><strong>CODE</strong></p> <pre><code>function isValidDate(s) { var bits = s.split('/'); if(s.indexOf(' ') != -1) { //White space exists in the original date string return false; } //Javascript month starts at zero var d = new Date(bits[2], bits[0] - 1, bits[1]); if ( isNaN( Number(bits[2]) ) ) { //Year is not valid number return false; } if ( Number(bits[2]) &lt; 1 ) { //Year should be greater than zero return false; } //1. Check whether the year is a Number //2. Check whether the date parts are eqaul to original date components //3. Check whether d is valid return d &amp;&amp; ( (d.getMonth() + 1) == bits[0]) &amp;&amp; (d.getDate() == Number(bits[1]) ); } </code></pre> <p>​</p>
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    1. POJavascript Valid Date Checking does not work in IE8 (and Firefox)
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    1. POJavascript Valid Date Checking does not work in IE8 (and Firefox)
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    1. COfails on isValidDate('2/29/2012')
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    2. CO@mplungjan Thanks. Corrected it. Please see now.
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    3. COIt seems to work, but I do not like it uses the side effects of not testing with === so for example so it passed `isValidDate('2/ 29 /2012')` which mine handles
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