Create random character using Javascript

JavaScript Function in Javascript (Article) Function in Javascript (Program)

269

---

Program:

<span class="tag">&lt;html&gt;</span><span class="pln">
</span><span class="tag">&lt;body&gt;</span><span class="pln">
</span><span class="tag">&lt;div&gt;</span><span class="pln">
Enter the length of character:
</span><span class="tag">&lt;input</span><span class="pln"> </span><span class="atn">type</span><span class="pun">=</span><span class="atv">'text'</span><span class="pln"> </span><span class="atn">id</span><span class="pun">=</span><span class="atv">"num"</span><span class="tag">&gt;</span><span class="pln">
</span><span class="tag">&lt;button</span><span class="pln"> </span><span class="atn">onclick</span><span class="pun">=</span><span class="atv">"</span><span class="pln">stringGen</span><span class="pun">()</span><span class="atv">"</span><span class="tag">&gt;</span><span class="pln">submit</span><span class="tag">&lt;/button&gt;</span><span class="pln">
</span><span class="tag">&lt;p</span><span class="pln"> </span><span class="atn">id</span><span class="pun">=</span><span class="atv">"result"</span><span class="tag">&gt;&lt;/p&gt;</span><span class="pln">
</span><span class="tag">&lt;/div&gt;</span><span class="pln">
</span><span class="tag">&lt;script</span><span class="pln"> </span><span class="atn">type</span><span class="pun">=</span><span class="atv">"text/javascript"</span><span class="pln"> </span><span class="atn">src</span><span class="pun">=</span><span class="atv">"index.js"</span><span class="tag">&gt;&lt;/SCRIPT&gt;</span><span class="pln">
</span><span class="tag">&lt;/body&gt;</span><span class="pln">
</span><span class="tag">&lt;/html&gt;</span><span class="pln">


function stringGen()
{
  var length = document.getElementById("num").value;
  // alert(length);
   var result           = '';
   var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
   var charactersLength = characters.length;
   for ( var i = 0; i &lt; length; i++ ) {
      result += characters.charAt(Math.floor(Math.random() * charactersLength));
   }
   document.getElementById("result").innerHTML = result; 
   return result;
}



</span>

Output:

above code will produce random character of a specific length.

Explanation:

---

---