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    copied!<p>Here you go : </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script src="http://cdn.jquerytools.org/1.2.6/full/jquery.tools.min.js"&gt;&lt;/script&gt; &lt;title&gt;Test&lt;/title&gt; &lt;/head&gt; &lt;script&gt; function validatePassword(obj) { //rule contains 7 chars and upper case and lower case and digit var password = obj.value; var numLowers = 0; var numCaps = 0; var numDigits = 0; var valid = true; if(password.length &gt; 7) { for(i = 0; i &lt; password.length; i++) { var charCode = password.charCodeAt(i); if(charCode &gt;= 48 &amp;&amp; charCode &lt;= 58 ) numDigits++; else if(charCode &gt;= 65 &amp;&amp; charCode &lt;= 90 ) numCaps++; else if(charCode &gt;= 97 &amp;&amp; charCode &lt;= 122 ) numLowers++; } if(numDigits &lt; 1 || numCaps &lt; 1 ) valid = false; } else { valid = false; } if(!valid){ $(".tooltip").append($("#password-error")); document.getElementById("password-error").style.display="block"; } else { document.getElementById("password-error").style.display="none"; } } &lt;/script&gt; &lt;body&gt; &lt;div&gt; &lt;form id="test" action ="#"&gt; &lt;div id="password-container"&gt; &lt;input type="text" id= "password" name="password" size="30" onKeyUp="validatePassword(this)" title=" Password contains 7 -20characters &lt;br/&gt; and upper case and digits." /&gt; &lt;/div&gt; &lt;div id="password-error" class="error" style="display:none;"&gt;Invalid Password&lt;/div&gt; &lt;/form&gt; &lt;/div&gt; &lt;/body&gt; </code></pre> <p></p> <p><a href="http://jsfiddle.net/ddrYp/9/" rel="nofollow">http://jsfiddle.net/ddrYp/9/</a></p>
 

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