javascript - JS Form validation is not working For html form -


i have simple html form. form follows-

<table>   <form method="post" action="insert.php"  name="idea_1" id="idea_1" onsubmit="return idea_1_check();" >         <input type="hidden" name="type" value="idea" />         <tr><td></td><td><br><h3 style="color:#990066; font-weight:bold;">first member (team leader)</h3><br></td></tr>      <tr><td></td><td><input type="text" name="stu_name_1" value="" placeholder="your full name"></td></tr>     <input type="text" name="school_name_1" value="" placeholder="your school name"></td></tr>     <tr><td></td><td><input type="text" name="stu_id_1" value="" placeholder="your student id/roll"></td></tr>      <tr><td></td><td>       <select name="class_1" id="class" required >         <option selected="selected" value="">please select class</option>         <option value="six">six</option>         <option value="seven">seven</option>         <option value="eight">eight</option>         <option value="nine">nine</option>         <option value="ten">ten</option>       </select>      </td></tr>     </td><td>     <select name="division_1" id="division" required>       <option selected="selected" value="">please select division</option>       <option value="dhaka">dhaka</option>       <option value="chittagong">chittagong</option>       <option value="sylhet">sylhet</option>     </select>      </td></tr>     <tr><td></td><td><input type="text" name="mobile_1" value="" placeholder="your parent's mobile" required id="phone" ></td></tr>     <tr><td></td><td><input type="text" name="interest_1" value="" placeholder="your interest e.g.: robotics, physics, chemistry, biology "></td></tr>     <tr><td></td><td><textarea name="address_1" required id="must"="required id="must"" placeholder="your full residential address"></textarea></td></tr>                                        <tr><td></td><td><input type="text" name="email_1" value="" placeholder="your email address" id="email_1"  ><img id="tick_1" src="tick.png" width="16" height="16"/>     <img id="cross_1" src="cross.png" width="16" height="16"/></td></tr> </table> <br> <p class="submit"><input type="submit" name="commit" value="register" ></p><br> <label>   <div align="center"><a href="http://ignite-bd.com/submit-concept-paper/" target="_blank"><strong>upload concept paper within 3 weeks (21 days) qualify divisional round</strong> </a>   </div> </label> <br><br>             </form>

and javascript validation function follows: 

function idea_1_check() {   var stu_name=document.forms["idea_1"]["stu_name_1"].value;   var school=document.forms["idea_1"]["school_name_1"].value;   var id=document.forms["idea_1"]["stu_id_1"].value;   var mob=document.forms["idea_1"]["mobile_1"].value;   var add=document.forms["idea_1"]["address_1"].value;   var email=document.forms["idea_1"]["email_1"].value;    var atpos=email.indexof("@");   var dotpos=email.lastindexof(".");       if (stu_name==null || stu_name=="" || stu_name.length<6)   {     alert("please provide full name");     return false;   }    if (school==null || school=="" || school.length<6)   {     alert("please provide full school name");     return false;   }    if (id==null || id=="" || id.length<1)   {     alert("please provide roll/id");     return false;   }    if (add=null || add=="" || add.length<10)   {     alert("please provide full residential address");     return false;   }    else if (email==null || email=="")   {     alert("email must filled out.");     return false;   }    else if (atpos <1 || dotpos <atpos+2 || dotpos + 2 >= email.length)   {     alert("not valid e-mail address");     return false;   } }

everything looks fine. validation not working. same code similar working. problem code?

just add return true @ end of validate function, form submit if there no validation errors


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