【JSE】フォームのテスト

Javascript Essential からフォームのテスト

by tea4two

HTML

<form action="" method="post" id="myForm">
    <label>email: <input type="text" id="email"></label>
        <label>address: <input type="text" id="address"></label>
    <p id="errorMsg"><!-- error msg. --></p>
        <button type="submit">送信</button>
</form>

CSS

#myForm {
    padding: 10px;
    margin: 10px;
    background: #f0f0f0;
}

label {
    display: block;
    margin-bottom: 20px;
}
#errorMsg {
    margin-bottom: 10px;
    color: red;
    font-weight: bold;
}

JavaScript

$(function(){
    formHandler();
});

function formHandler() {
    $('#myForm').submit(function(){
        if($('#email').val() == '') {
            $('#errorMsg').html('please provide at least an email address.');
            return false;//prevent this submitting function.
        } else {
            //reset error msg.
            $('#errorMsg').html('');
            return true;//arrow form to be submitted.
        }
    });
}