predefined validation constraints

by trixta

HTML

<script src="https://afarkas.github.io/webshim/js-webshim/minified/polyfiller.js"></script>
<!-- simply add .ws-validate to your form and you get nice inline form validation -->
<form action="#" class="ws-validate">
    <div class="form-row">
        <label>
            enter something:
            <input type="text" required="" data-foo=""  />
        </label>
        
    </div>
    <div class="form-row">
        <input type="submit" />
    </div>
</form>

CSS

div.ws-invalid input {
    border-color: #c88;
}
.ws-invalid label {
    color: #933;
}
div.ws-success input {
    border-color: #8c8;
}
form {
    margin: 10px auto;
    max-width: 400px;
    min-width: 220px;
}
.form-row {
    padding: 5px 10px;
    margin: 5px 0;
}
label {
    display: block;
    margin: 3px 0;
}
.form-row input {
    width: 220px;
    padding: 3px 1px;
    border: 1px solid #ccc;
    box-shadow: none;
}
.form-row input[type="checkbox"] {
    width: 15px;
}
}

JavaScript

webshim.setOptions('forms', {
    lazyCustomMessages: true,
    addValidators: true
});

//start polyfilling
webshim.polyfill('forms forms-ext');

//wait until form-validators are implemented 
webshim.ready('form-validators', function () {
    webshim.addCustomValidityRule("foo", function(elem, value, data){
        if(value && 'foo' in data){
            return value != 'bar';
        }

    }, "enter 'bar' please");
});