title: How to make space between strings using concat() method in JavaScript
body: <p>I want to concat multiple string using concat() method it works fine but how can i make white space between them</p>
  
  <pre><code>&lt;HTML&gt;
      &lt;head&gt;
         &lt;title&gt;&lt;/title&gt;
      &lt;/head&gt;
      &lt;body&gt;
         &lt;label id="label_one" style="color:blue;"&gt;&lt;/label&gt;&lt;br/&gt;
         &lt;label id="label_two" style="color:blue;"&gt;&lt;/label&gt;&lt;br/&gt;
         &lt;label id="label_three" style="color:blue;"&gt;&lt;/label&gt;&lt;br/&gt;
         &lt;script&gt;
             var one = "abc";
             var two = "def";
             var three = one.concat(two)
             var four = three.length;
             var variableLen = one.concat(three, four);
             document.getElementById("label_one").innerHTML = one;
             document.getElementById("label_two").innerHTML = two;
             document.getElementById("label_three").innerHTML = variableLen;
         &lt;/script&gt;
      &lt;/body&gt;
  &lt;/HTML&gt;
  </code></pre>
  
  <p>and my output is </p>
  
  <p><strong>abcdef6</strong>  I want my output like this <strong>abc def 6</strong> with space after concate and using concate() method of JavaScript not with concate operator(+)</p>