jQuery plugin: Validation
한창 작업 중인 쇼핑몰 사이트에 사용하기 위해 jQuery Validation 플러그인을 찾아보니 다행히 마음에 드는 강력한
플러그인이 있어 소개하고자 한다. 매번 직접 스크립트로 폼의 데이터를 검증했는데 이제는 좀 편하게할 수 있겠다.
Validation 플러그인 참고 문서 : http://rocketsquared.com/wiki/Plugins/Validation
아래는 어떤 식으로 사용이 되는지를 보여주는 간단한 예제이다.
참고 예제 : http://jquery.bassistance.de/validate/demo/milk/
$(document).ready(function() {
// validate signup form on keyup and submit
var validator = $(“#signupform”).validate({
rules: {
firstname: “required”,
lastname: “required”,
username: {
required: true,
minlength: 2,
remote: “users.php”
},
password: {
required: true,
minlength: 5
},
password_confirm: {
required: true,
minlength: 5,
equalTo: “#password”
},
email: {
required: true,
email: true,
remote: “emails.php”
},
dateformat: “required”,
terms: “required”
},
messages: {
firstname: “Enter your firstname”,
lastname: “Enter your lastname”,
username: {
required: “Enter a username”,
minlength: jQuery.format(“Enter at least {0} characters”),
remote: jQuery.format(“{0} is already in use”)
},
password: {
required: “Provide a password”,
rangelength: jQuery.format(“Enter at least {0} characters”)
},
password_confirm: {
required: “Repeat your password”,
minlength: jQuery.format(“Enter at least {0} characters”),
equalTo: “Enter the same password as above”
},
email: {
required: “Please enter a valid email address”,
minlength: “Please enter a valid email address”,
remote: jQuery.format(“{0} is already in use”)
},
dateformat: “Choose your preferred dateformat”,
terms: ” “
},
// the errorPlacement has to take the table layout into account
errorPlacement: function(error, element) {
if ( element.is(“:radio”) )
error.appendTo( element.parent().next().next() );
else if ( element.is(“:checkbox”) )
error.appendTo ( element.next() );
else
error.appendTo( element.parent().next() );
},
// specifying a submitHandler prevents the default submit, good for the demo
submitHandler: function() {
alert(“submitted!”);
},
// set this class to error-labels to indicate valid fields
success: function(label) {
// set as text for IE
label.html(“ ”).addClass(“checked”);
}
});
// propose username by combining first- and lastname
$(“#username”).focus(function() {
var firstname = $(“#firstname”).val();
var lastname = $(“#lastname”).val();
if(firstname && lastname && !this.value) {
this.value = firstname + “.” + lastname;
}
});
});
</script>
<form id=”signupform” autocomplete=”off” method=”get” action=””>
<table>
<tr>
<td class=”label”><label id=”lfirstname” for=”firstname”>First Name</label></td>
<td class=”field”><input id=”firstname” name=”firstname” type=”text” value=”” maxlength=”100″ /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label id=”llastname” for=”lastname”>Last Name</label></td>
<td class=”field”><input id=”lastname” name=”lastname” type=”text” value=”” maxlength=”100″ /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label id=”lusername” for=”username”>Username</label></td>
<td class=”field”><input id=”username” name=”username” type=”text” value=”” maxlength=”50″ /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label id=”lpassword” for=”password”>Password</label></td>
<td class=”field”><input id=”password” name=”password” type=”password” maxlength=”50″ value=”” /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label id=”lpassword_confirm” for=”password_confirm”>Confirm Password</label></td>
<td class=”field”><input id=”password_confirm” name=”password_confirm” type=”password” maxlength=”50″ value=”” /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label id=”lemail” for=”email”>Email Address</label></td>
<td class=”field”><input id=”email” name=”email” type=”text” value=”” maxlength=”150″ /></td>
<td class=”status”></td>
</tr>
<tr>
<td class=”label”><label>Which Looks Right</label></td>
<td class=”field” colspan=”2″ style=”vertical-align: top; padding-top: 2px;”>
<table>
<tbody>
<tr>
<td style=”padding-right: 5px;”>
<input id=”dateformat_eu” name=”dateformat” type=”radio” value=”0″ />
<label id=”ldateformat_eu” for=”dateformat_eu”>14/02/07</label>
</td>
<td style=”padding-left: 5px;”>
<input id=”dateformat_am” name=”dateformat” type=”radio” value=”1″ />
<label id=”ldateformat_am” for=”dateformat_am”>02/14/07</label>
</td>
<td>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td class=”label”> </td>
<td class=”field” colspan=”2″>
<div id=”termswrap”>
<input id=”terms” type=”checkbox” name=”terms” />
<label id=”lterms” for=”terms”>I have read and accept the Terms of Use.</label>
</div> <!– /termswrap –>
</td>
</tr>
<tr>
<td class=”label”><label id=”lsignupsubmit” for=”signupsubmit”>Signup</label></td>
<td class=”field” colspan=”2″>
<input id=”signupsubmit” name=”signup” type=”submit” value=”Signup” />
</td>
</tr>
</table>
</form>
Validation시 각 필드에 적용된 규칙과 에러메시지도 직접 지정할 수 있어서 상당히 유용하게 사용될 것 같다.