expected ',' javascript firebase : <p>i have this problem in javascript code</p>

<p>expected ',' in line   <code>like: like + 1;</code></p>

<p>expected ',' in line  <code>dislike: dislike + 1;</code></p>

<p><strong>html code</strong></p>

<pre><code>&lt;div class="container"&gt;
    &lt;div class="button-container like-container"&gt;
        &lt;a href="#"&gt;
            &lt;i class="fa fa-heart-o"&gt; Like&lt;/i&gt;
        &lt;/a&gt;
    &lt;/div&gt;
    &lt;div class="button-container dislike-container"&gt;
        &lt;a href="#"&gt;
            &lt;i class="fa fa-heart"&gt; Dislike&lt;/i&gt;
        &lt;/a&gt;
    &lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p><strong>javascript code</strong> </p>

<pre><code>var likeDislike = new Firebase("https://like-unlike.firebaseio.com/");

var like;
var dislike;

likeDislike.on("value", function(likeDislikeData) {
    var data = likeDislikeData.val();
    like = data.like;
    dislike = data.dislike;
});

$('.like-container').on('click', function() {
    likeDislike.update({
        like: like + 1;
    });
    console.log("Number of likes:" + like);
});

$('.dislike-container a').on('click', function() {
    likeDislike.update({
        dislike: dislike + 1;
    });
    console.log("Number of dislikes: " + dislike);
});
</code></pre>
