Form validering: minimum 3 checkboxes ticked
Hej eksperter,I min form skal brugeren minimum vaelge 3 interesse omraader, hvilket bliver valideret via javascript. Det virker lige indtil jeg aendrer checkboxes "name" , for at kunne parse de individuelle vaerdier/interesser til en database.
Nogen der ved hvordan man aendrer javascriptet saa koden kan validere, selvom checkboxes har forskellige navne.
Komplet Kode pasted nedenunder
Paa forhaand mange tak!
<html>
<head>
<title>Last step</title>
<style type="text/css">
.form
{
color: #000000;
width:220px;
height:30px;
text-align:center;
font-size:18px;
}
body,td,th {
font-family: Arial, Helvetica, sans-serif;
font-size: 12px;
}
</style>
<script Language="JavaScript">
<!--
function checkbox_checker()
{
if(document.checkbox_form.fname.value == "") {
alert("Please enter your first name");
document.checkbox_form.fname.focus();
return (false);
}
if(document.checkbox_form.lname.value == "") {
alert("Please enter your last name");
document.checkbox_form.lname.focus();
return (false);
}
if(document.checkbox_form.age.value == "") {
alert("Please select your age");
document.checkbox_form.age.focus();
return (false);
}
if(document.checkbox_form.gender.value == "") {
alert("Please select your gender");
document.checkbox_form.gender.focus();
return (false);
}
if(document.checkbox_form.country.value == "") {
alert("Please select your home country");
document.checkbox_form.country.focus();
return (false);
}
if(document.checkbox_form.marry.value == "") {
alert("Please select your marital status");
document.checkbox_form.marry.focus();
return (false);
}
if(document.checkbox_form.edu.value == "") {
alert("Please select your educational level");
document.checkbox_form.edu.focus();
return (false);
}
// set var checkbox_choices to zero
var checkbox_choices = 0;
// Loop from zero to the one minus the number of checkbox button selections
for (counter = 0; counter < checkbox_form.checkbox.length; counter++)
{
// If a checkbox has been selected it will return true
// (If not it will return false)
if (checkbox_form.checkbox[counter].checked)
{ checkbox_choices = checkbox_choices + 1; }
}
if (checkbox_choices < 3 )
{
// If there were less then selections made display an alert box
alert("Please select at least three topics of interest. \n" + checkbox_choices + " entered so far.")
return (false);
}
}
</script>
</head>
<body>
<table width="500" border="0" class="form">
<tr>
<td><form name="checkbox_form" method="post" action="site3.php" onsubmit="return checkbox_checker();">
<table width="463" class="demo" border="0">
<tr>
<td colspan="2" align="center" valign="top" style="padding-top:10px;">
</p></td>
</tr>
<tr>
<td width="31%">First name</td>
<td width="69%"><input type="text" name="fname" id="req1"></td>
</tr>
<tr>
<td>Last name</td>
<td><input type="text" name="lname" id="lname"></td>
</tr>
<tr>
<td>Age</td>
<td><select name="age">
<option value="">Please select</option>
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
<option value="22">22</option>
<option value="23">23</option>
<option value="24">24</option>
<option value="25">25</option>
<option value="26">26</option>
<option value="27">27</option>
<option value="28">28</option>
<option value="29">29</option>
<option value="30">30</option>
<option value="31">31</option>
<option value="32">32</option>
<option value="33">33</option>
<option value="34">34</option>
<option value="35">35</option>
<option value="36">36</option>
<option value="37">37</option>
<option value="38">38</option>
<option value="39">39</option>
<option value="40">40</option>
<option value="41">41</option>
<option value="42">42</option>
<option value="43">43</option>
<option value="44">44</option>
<option value="45">45</option>
<option value="46">46</option>
<option value="47">47</option>
<option value="48">48</option>
<option value="49">49</option>
<option value="50">50</option>
<option value="51">51</option>
<option value="52">52</option>
<option value="53">53</option>
<option value="54">54</option>
<option value="55">55</option>
<option value="56">56</option>
<option value="57">57</option>
<option value="58">58</option>
<option value="59">59</option>
<option value="60">60</option>
<option value="61">61</option>
<option value="62">62</option>
<option value="63">63</option>
<option value="64">64</option>
<option value="65">65</option>
<option value="66">66</option>
<option value="67">67</option>
<option value="68">68</option>
<option value="69">69</option>
<option value="70">70</option>
<option value="71">71</option>
<option value="72">72</option>
<option value="73">73</option>
<option value="74">74</option>
<option value="75">75</option>
<option value="76">76</option>
<option value="77">77</option>
<option value="78">78</option>
<option value="79">79</option>
<option value="80">80</option>
<option value="81">81</option>
<option value="82">82</option>
<option value="83">83</option>
<option value="84">84</option>
<option value="85">85</option>
<option value="86">86</option>
<option value="87">87</option>
<option value="88">88</option>
<option value="89">89</option>
</select></td>
</tr>
<tr>
<td>Gender</td>
<td><select name="gender" id="select">
<option value="">Please select</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
</select></td>
</tr>
<tr>
<td>Country</td>
<td><select name="country">
<option value="" selected>(please select a country)</option>
<option value="AF">Afghanistan</option>
<option value="AL">Albania</option>
<option value="DZ">Algeria</option>
<option value="AS">American Samoa</option>
<option value="AD">Andorra</option>
<option value="AO">Angola</option>
<option value="AI">Anguilla</option>
<option value="AQ">Antarctica</option>
<option value="AG">Antigua and Barbuda</option>
<option value="AR">Argentina</option>
<option value="AM">Armenia</option>
<option value="AW">Aruba</option>
<option value="AU">Australia</option>
<option value="AT">Austria</option>
<option value="AZ">Azerbaijan</option>
<option value="BS">Bahamas</option>
<option value="BH">Bahrain</option>
<option value="BD">Bangladesh</option>
<option value="BB">Barbados</option>
<option value="BY">Belarus</option>
<option value="BE">Belgium</option>
<option value="BZ">Belize</option>
<option value="BJ">Benin</option>
<option value="BM">Bermuda</option>
<option value="BT">Bhutan</option>
<option value="BO">Bolivia</option>
<option value="BA">Bosnia and Herzegowina</option>
<option value="BW">Botswana</option>
<option value="BV">Bouvet Island</option>
<option value="BR">Brazil</option>
<option value="BN">Brunei Darussalam</option>
<option value="BG">Bulgaria</option>
<option value="BF">Burkina Faso</option>
<option value="BI">Burundi</option>
<option value="KH">Cambodia</option>
<option value="CM">Cameroon</option>
<option value="CA">Canada</option>
<option value="CV">Cape Verde</option>
<option value="KY">Cayman Islands</option>
<option value="TD">Chad</option>
<option value="CL">Chile</option>
<option value="CN">China</option>
<option value="CX">Christmas Island</option>
<option value="CC">Cocos (Keeling) Islands</option>
<option value="CO">Colombia</option>
<option value="KM">Comoros</option>
<option value="CG">Congo</option>
<option value="CK">Cook Islands</option>
<option value="CR">Costa Rica</option>
<option value="CI">Cote d'Ivoire</option>
<option value="HR">Croatia (Hrvatska)</option>
<option value="CU">Cuba</option>
<option value="CY">Cyprus</option>
<option value="CZ">Czech Republic</option>
<option value="DK">Denmark</option>
<option value="DJ">Djibouti</option>
<option value="DM">Dominica</option>
<option value="DO">Dominican Republic</option>
<option value="TP">East Timor</option>
<option value="EC">Ecuador</option>
<option value="EG">Egypt</option>
<option value="SV">El Salvador</option>
<option value="GQ">Equatorial Guinea</option>
<option value="ER">Eritrea</option>
<option value="EE">Estonia</option>
<option value="ET">Ethiopia</option>
<option value="FK">Falkland Islands (Malvinas)</option>
<option value="FO">Faroe Islands</option>
<option value="FJ">Fiji</option>
<option value="FI">Finland</option>
<option value="FR">France</option>
<option value="FX">France, Metropolitan</option>
<option value="GF">French Guiana</option>
<option value="PF">French Polynesia</option>
<option value="GA">Gabon</option>
<option value="GM">Gambia</option>
<option value="GE">Georgia</option>
<option value="DE">Germany</option>
<option value="GH">Ghana</option>
<option value="GI">Gibraltar</option>
<option value="GR">Greece</option>
<option value="GL">Greenland</option>
<option value="GD">Grenada</option>
<option value="GP">Guadeloupe</option>
<option value="GU">Guam</option>
<option value="GT">Guatemala</option>
<option value="GN">Guinea</option>
<option value="GW">Guinea-Bissau</option>
<option value="GY">Guyana</option>
<option value="HT">Haiti</option>
<option value="HN">Honduras</option>
<option value="HK">Hong Kong</option>
<option value="HU">Hungary</option>
<option value="IS">Iceland</option>
<option value="IN">India</option>
<option value="ID">Indonesia</option>
<option value="IR">Iran (Islamic Republic of)</option>
<option value="IQ">Iraq</option>
<option value="IE">Ireland</option>
<option value="IL">Israel</option>
<option value="IT">Italy</option>
<option value="JM">Jamaica</option>
<option value="JP">Japan</option>
<option value="JO">Jordan</option>
<option value="KZ">Kazakhstan</option>
<option value="KE">Kenya</option>
<option value="KI">Kiribati</option>
<option value="KP">Korea, Democratic People's Republic of</option>
<option value="KR">Korea, Republic of</option>
<option value="KW">Kuwait</option>
<option value="KG">Kyrgyzstan</option>
<option value="LA">Laos</option>
<option value="LV">Latvia</option>
<option value="LB">Lebanon</option>
<option value="LS">Lesotho</option>
<option value="LR">Liberia</option>
<option value="LY">Libyan Arab Jamahiriya</option>
<option value="LI">Liechtenstein</option>
<option value="LT">Lithuania</option>
<option value="LU">Luxembourg</option>
<option value="MO">Macau</option>
<option value="MG">Madagascar</option>
<option value="MW">Malawi</option>
<option value="MY">Malaysia</option>
<option value="MV">Maldives</option>
<option value="ML">Mali</option>
<option value="MT">Malta</option>
<option value="MH">Marshall Islands</option>
<option value="MQ">Martinique</option>
<option value="MR">Mauritania</option>
<option value="MU">Mauritius</option>
<option value="YT">Mayotte</option>
<option value="MX">Mexico</option>
<option value="MD">Moldova, Republic of</option>
<option value="MC">Monaco</option>
<option value="MN">Mongolia</option>
<option value="MS">Montserrat</option>
<option value="MA">Morocco</option>
<option value="MZ">Mozambique</option>
<option value="MM">Myanmar</option>
<option value="NA">Namibia</option>
<option value="NR">Nauru</option>
<option value="NP">Nepal</option>
<option value="NL">Netherlands</option>
<option value="AN">Netherlands Antilles</option>
<option value="NC">New Caledonia</option>
<option value="NZ">New Zealand</option>
<option value="NI">Nicaragua</option>
<option value="NE">Niger</option>
<option value="NG">Nigeria</option>
<option value="NU">Niue</option>
<option value="NF">Norfolk Island</option>
<option value="MP">Northern Mariana Islands</option>
<option value="NO">Norway</option>
<option value="OM">Oman</option>
<option value="PK">Pakistan</option>
<option value="PW">Palau</option>
<option value="PA">Panama</option>
<option value="PG">Papua New Guinea</option>
<option value="PY">Paraguay</option>
<option value="PE">Peru</option>
<option value="PH">Philippines</option>
<option value="PN">Pitcairn</option>
<option value="PL">Poland</option>
<option value="PT">Portugal</option>
<option value="PR">Puerto Rico</option>
<option value="QA">Qatar</option>
<option value="RE">Reunion</option>
<option value="RO">Romania</option>
<option value="RU">Russian Federation</option>
<option value="RW">Rwanda</option>
<option value="KN">Saint Kitts and Nevis</option>
<option value="LC">Saint LUCIA</option>
<option value="WS">Samoa</option>
<option value="SM">San Marino</option>
<option value="ST">Sao Tome and Principe</option>
<option value="SA">Saudi Arabia</option>
<option value="SN">Senegal</option>
<option value="SC">Seychelles</option>
<option value="SL">Sierra Leone</option>
<option value="SG">Singapore</option>
<option value="SK">Slovakia (Slovak Republic)</option>
<option value="SI">Slovenia</option>
<option value="SB">Solomon Islands</option>
<option value="SO">Somalia</option>
<option value="ZA">South Africa</option>
<option value="ES">Spain</option>
<option value="LK">Sri Lanka</option>
<option value="SH">St. Helena</option>
<option value="PM">St. Pierre and Miquelon</option>
<option value="SD">Sudan</option>
<option value="SR">Suriname</option>
<option value="SZ">Swaziland</option>
<option value="SE">Sweden</option>
<option value="CH">Switzerland</option>
<option value="SY">Syrian Arab Republic</option>
<option value="TW">Taiwan, Province of China</option>
<option value="TJ">Tajikistan</option>
<option value="TZ">Tanzania, United Republic of</option>
<option value="TH">Thailand</option>
<option value="TG">Togo</option>
<option value="TK">Tokelau</option>
<option value="TO">Tonga</option>
<option value="TT">Trinidad and Tobago</option>
<option value="TN">Tunisia</option>
<option value="TR">Turkey</option>
<option value="TM">Turkmenistan</option>
<option value="TC">Turks and Caicos Islands</option>
<option value="TV">Tuvalu</option>
<option value="UG">Uganda</option>
<option value="UA">Ukraine</option>
<option value="AE">United Arab Emirates</option>
<option value="GB">United Kingdom</option>
<option value="US">United States</option>
<option value="UY">Uruguay</option>
<option value="UZ">Uzbekistan</option>
<option value="VU">Vanuatu</option>
<option value="VE">Venezuela</option>
<option value="VN">Viet Nam</option>
<option value="VG">Virgin Islands (British)</option>
<option value="VI">Virgin Islands (U.S.)</option>
<option value="WF">Wallis and Futuna Islands</option>
<option value="EH">Western Sahara</option>
<option value="YE">Yemen</option>
<option value="YU">Yugoslavia</option>
<option value="ZM">Zambia</option>
<option value="ZW">Zimbabwe</option>
</select></td>
</tr>
<tr>
<td>Marital status</td>
<td><select name="marry">
<option value="" selected="selected">Please select</option>
<option value="Single">Single</option>
<option value="In relationship">In a relationship</option>
<option value="Married">Married</option>
<option value="Divorced">Divorced</option>
</select></td>
</tr>
<tr>
<td>Education level</td>
<td><select name="edu">
<option value="" selected="selected">Please select</option>
<option value="None">None</option>
<option value="High School">High school</option>
<option value="Bachelor">Bachelor</option>
<option value="Master">Master or higher</option>
</select></td>
</tr>
</table>
<table width="463" border="0" class="demo" >
<tr>
<td colspan="8"><strong><br>
Select at least 3 topics that interest you<br>
</strong></td>
</tr>
<tr>
<td><input type="checkbox" NAME="Animals" value="yes"></td>
<td>Animals</td>
<td><input type="checkbox" NAME="Business" value="yes"></td>
<td>Business</td>
<td><input type="checkbox" NAME="Computer" value="yes"></td>
<td>Computer</td>
<td><input type="checkbox" NAME="Dating" value="yes"></td>
<td>Dating</td>
</tr>
<tr>
<td><input type="checkbox" NAME="Food" value="yes"></td>
<td>Food</td>
<td><input type="checkbox" NAME="Gaming" value="yes"></td>
<td>Gaming</td>
<td><input type="checkbox" NAME="Gambling" value="yes"></td>
<td>Gambling</td>
<td><input type="checkbox" NAME="Health" value="yes"></td>
<td>Health</td>
</tr>
<tr>
<td><input type="checkbox" NAME="Money" value="yes"></td>
<td>Money</td>
<td><input type="checkbox" NAME="Sport" value="yes"></td>
<td>Sport</td>
<td><input type="checkbox" NAME="TV" value="yes"></td>
<td>TV/Movies</td>
<td><input type="checkbox" NAME="Mobiles" value="yes"></td>
<td>Mobiles</td>
</tr>
<tr>
<td colspan="8"><br><center>
<p>
<input name="image" type="image" value="submitname" src="images/submit.gif" alt="SUBMIT!" width="203" height="48" border="0">
</p>
</center></td>
</tr>
</table>
</form>
</td>
</tr>
</table>
</body>
</html>
