Can't find angularJS libs
<p>I am new to front end development and learning angularJS. I have following folder structure</p>

<pre><code>.
├── angular.min.js
├── app.js
├── bootstrap.min.css
└── index.html
</code></pre>

<p>And here is my <code>index.html</code></p>

<pre><code>&lt;!DOCTYPE html&gt;
&lt;html ng-app="gemStore"&gt;

&lt;head&gt;
    &lt;link rel="stylesheet" type="text/css" href="bootstrap.min.css" /&gt;
    &lt;script type="text/javascript" src="angular.min.js"&gt;&lt;/script&gt;
    &lt;script type="text/javascript" src="app.js"&gt;&lt;/script&gt;
&lt;/head&gt;

&lt;body ng-controller="StoreController as store"&gt;
    &lt;div class="product row" ng-hide="store.product.soldOut"&gt;
        &lt;h3&gt;
        {{store.product.name}}
        &lt;em class="pull-right"&gt;${{store.product.price}}&lt;/em&gt;
    &lt;/h3&gt;
        &lt;button ng-show="store.product.canPurchase"&gt;Add to cart&lt;/button&gt;
    &lt;/div&gt;
&lt;/body&gt;

&lt;/html&gt;
</code></pre>

<p>and my <code>app.js</code> file is</p>

<pre><code>(function(){
    var app = angular.module('gemStore', []);

    app.controller('StoreController', function(){
        this.products = gem;
    });

    var gem = [{
            name: 'Azurite', 
            price: 2.95,
            canPurchase: false,
            soldOut: true;
            }, {
            name: 'Azurite 2', 
            price: 2.95,
            canPurchase: false,
            soldOut: true,      
            }]
})();
</code></pre>

<p>When i open this index.html page on chrome, I don't see <code>angularJS</code> directives being replaced by real value. I haven't hosted this file on any server. As per my understanding, for html, i can just keep all the resources in relative path and the <code>html</code> file could see them. then why not here <code>angularJS</code> is able to resolve it ?</p>

<p>Here is my <code>html</code> output when i open it on chrome </p>

<p><a href="https://i.stack.imgur.com/9Ga7O.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9Ga7O.png" alt="enter image description here"></a></p>