Knockout.JS - Bindings - Components

by Marventus

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.0/knockout-min.js"></script>
<h2>Modelo de vista</h2>
<h4>Component</h4>

<main class="summary">
    <div class="fifty">
        <p>First instance, without parameters</p>
        <div data-bind='component: "message-editor"'></div>
    </div>
    
    <div class="fifty last">
        <p>Second instance, passing parameters</p>
        <div data-bind='component: {
    name: "message-editor",
    params: { initialText: "Hello, world!" }
}'></div>

    </div>
</main>

CSS

body {
    background: rgba(247, 243, 222, 0.9);
    color: #777;
    font: 16px Arial, Helvetica, sans-serif;
    max-width: 100%;
    margin: 0 auto;
    padding: 1em 3em;
    text-align: center;
}

a,
a:hover,
a:visited,
a:active,
a:focus,
h2 {
    color: rgb(139, 116, 61);
}

button,
input,
select {
    box-sizing: border-box;
    border: 1px solid rgba(139, 116, 61, 0.6);
    padding: 0.5em 1em;
    width: 100%;
}

button:focus,
input:focus,
select:focus {
    border: 1px solid rgba(139, 116, 61, 1);
    box-shadow: 0;
    outline: 0;
}

select {
    height: 10em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: bold;
    margin: 0;
}

h2 {
    font-size: 2em;
    margin: 0;
}

h4 {
    font-size: 1.2em;
    margin-bottom: 1em;
}

form,
main {
    margin: 1.5em auto;
    max-width: 90%;
}

main {
    padding: 0.5em 1em;
    position: relative;
}

main p {
    margin-top: 0;
}

ol,
ul {
    text-align: left;
}

p {
    font-size: 0.9rem;
    margin: 1em 0;
}

.credit {
    background: rgba(0, 0, 0, 0.1);
    bottom: 0;
    font-size: 0.8em;
    margin-top: 3em;
    padding: 1em;
    position: absolute;
    right: 0;
    text-align: right;
    width: 100%;
}

.buttons {
    box-sizing: border-box;
    height: 2em;
}

.buttons button {
    border-color: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
    box-sizing: border-box;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    font-size: 0.7em;
    height: 2em;
    margin: 1em 0 0;
    max-width: 32%;
    outline: none;
    text-transform: uppercase;
}

.buttons button:disabled {
    cursor: default;
    opacity: 0.3;
}

.buttons button:last-of-type {
    margin-right: 0;
}

#add {
    background: #8d8;
}

#clear {
    background: rgba(139, 116, 61, 0.9);
}

#remove {
    background: #f88;
}

#status-container {
    margin: 0.5em 0 0;
    text-align: left;
}

#status-container span {
    color: #6c6;
    font-weight: bold;
}

#status-container span.error {
    color: #c66;
}

.fifty {
    float:...

JavaScript

ko.components.register('message-editor', {
    viewModel: function(params) {
        this.text = ko.observable(params && params.initialText || '');
    },
    template: '<p>Message: <input data-bind="value: text" /></p>' + '<p>(length: <span data-bind="text: text().length"></span>)</p>'
});

ko.applyBindings();