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POString Time Validations (In javascript)
 

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  1. POString Time Validations (In javascript)
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    <p>I have a text box which accepts time(max of 5 characters only), and a drop down which accepts am or pm value. </p> <p>I need to perform some validations for the string values entered into the text box such as:</p> <ol> <li>If user enters 9 => Should be changed to 0900</li> <li>9:3 => 0930</li> <li>09:3 => 0930</li> <li>93 => alert ('Invalid Hours value)</li> <li>115 => 0115</li> <li>12 => 1200</li> <li>Invalid entries such as !@#$%^&amp;*()&lt;>?/~`,;'"[]_-abcdefg.. => alert ('Invalid Time Value') should be displayed.</li> </ol> <p>So far, all I've achieved is replacing the : with ''. For example, if user enters 09:00 => 0900</p> <p>I need something like:</p> <p>if clks is 1 digit, then rightpad clks with 2 zeroes.</p> <p>if 2 digits: clks > 12 , then alert(Invalid hours value)</p> <p>if 3 digits: clks &lt; (%59) (i.e checking last 2 chars) , then leftpad with 1 zero or clks > (%59) , then alert ('Invalid minutes value)</p> <p>if 4 digits: clks>12% (checking first 2 chars), alert ('invalid hours value') or (clks>12% and clks>59%) , then alert('invalid clock time') or (clks&lt;12%) and (clks&lt;59%) , then accept the number as it is.</p> <p>if 5 digits: (and all are numbers), then alert('invalid clk time')</p> <p>These validations need to be done within script tag. (The backend language that I've used is jsp.)</p> <p>Pls help me :(</p> <p>Here is a part of the code that I have written:</p> <pre><code>&lt;script type='text/javascript'&gt; function clocks(){ var clk = document.getElementById('TIME').value; var clks = clk.replace('/:/g',''); var ampm = document.getElementById('AMPM').value; var add = 1200; if (clks=="") { alert("You must enter clock time"); } else { if (ampm=='p') { clks=parseFloat(clks) + parseFloat(add); } } } .... &lt;/script&gt; </code></pre>
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    1. CO9:3 => 0930, 09:3 => 0930 and 93 => 0930 appears ambiguous at best. Are you required to accept these inputs? If not I'd just flag those as invalid as well.
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    2. CO@ deceze : Yes deceze.It has to work for these 3 entries as well. It's a part of the requirement.
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    3. CO"115 => 0115" is also ambiguous, why is "115" changed to "0115" rather than "1150"? Are all the times supposed to be on 15 minute boundaries?
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