ethers.js/docs/v3/getting-started.html
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<h1>Getting Started<a class="headerlink" href="#getting-started" title="Permalink to this headline"></a></h1>
<p>The ethers.js library is a compact and complete JavaScript library for Ethereum.</p>
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<h2>Installing in Node.js<a class="headerlink" href="#installing-in-node-js" title="Permalink to this headline"></a></h2>
<p>From your project directory:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">/</span><span class="n">Users</span><span class="o">/</span><span class="n">ricmoo</span><span class="o">/</span><span class="n">my</span><span class="o">-</span><span class="n">project</span><span class="o">&gt;</span> <span class="n">npm</span> <span class="n">install</span> <span class="o">--</span><span class="n">save</span> <span class="n">ethers</span>
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<p>And from the relevant application files:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">var</span> <span class="n">ethers</span> <span class="o">=</span> <span class="n">require</span><span class="p">(</span><span class="s1">&#39;ethers&#39;</span><span class="p">);</span>
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<h2>Including in Web Applications<a class="headerlink" href="#including-in-web-applications" title="Permalink to this headline"></a></h2>
<p>For security purposes, it is usually best to place a copy of <a class="reference external" href="https://cdn.ethers.io/scripts/ethers-v3.0.min.js">this script</a> on
the applications server, but for a quick prototype using the Ethers CDN (content
distribution network) should suffice:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>&lt;!-- This exposes the library as a global variable: ethers --&gt;
&lt;script src=&quot;https://cdn.ethers.io/scripts/ethers-v3.min.js&quot;
charset=&quot;utf-8&quot;
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&lt;/script&gt;
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