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POhow to correctly validate a form using javascript .?
 

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  1. POhow to correctly validate a form using javascript .?
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    <p>I am trying to validate a form using javascript, Here is my code</p> <pre><code> &lt;script type="text/javascript"&gt; function prevSubmit(){ var oForm = document.forms[0]; var pass1= oForm.elements["passwd"]; var pass2=oForm.elements["repasswd"]; var flag = 1; if (pass1.value.length&gt;16) { document.getElementById("passError").innerHTML = "password may atleast 16 chars"; flag = 0; } else document.getElementById("passError").innerHTML = ""; if(pass1.value&lt;=16 &amp;&amp; pass1.value!=pass2.value) { document.getElementById("passError").innerHTML = "password must be same"; flag = 0; } else document.getElementById("passError").innerHTML = ""; return flag; } &lt;/script&gt; </code></pre> <p>and here is my form element,</p> <pre><code> &lt;form id="registration_form" action="registration.php" method="post" onsubmit="return prevSubmit();"&gt; &lt;p&gt; &lt;label&gt;Name&lt;/label&gt; &lt;input type="text" name="name"/&gt; &lt;span id="NameError"&gt;&lt;/span&gt; &lt;/p&gt; &lt;p&gt; &lt;label&gt;Email&lt;/label&gt; &lt;input type="text" name="email"/&gt; &lt;span id="emailError"&gt;&lt;/span&gt; &lt;/p&gt; &lt;p&gt; &lt;label&gt;Password&lt;/label&gt; &lt;input type="password" name="passwd"/&gt; &lt;span id="passError"&gt;&lt;/span&gt; &lt;/p&gt; &lt;p&gt; &lt;label&gt;Repeat Password&lt;/label&gt; &lt;input type="password" name="repasswd"/&gt; &lt;/p&gt; &lt;input type="submit" class="button" value="sign up"/&gt; &lt;/form&gt; </code></pre> <p>what I am trying to accomplish is check the password, if no match or greater than 16, then show the message and prevent submission, but its not working, Why?</p>
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    1. USTamim Addari
    1. USTamim Addari
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    1. COdont use 1 or 0 for flag... this will not help you in prevention of submission use `true` `false`
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      1. POhow to correctly validate a form using javascript .?
      1. USmuneebShabbir
 

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