<html>
<body>
<div>
Enter the length of character:
<input type='text' id="num">
<button onclick="stringGen()">submit</button>
<p id="result"></p>
</div>
<script type="text/javascript" src="index.js"></SCRIPT>
</body>
</html>
function stringGen()
{
var length = document.getElementById("num").value;
// alert(length);
var result = '';
var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
var charactersLength = characters.length;
for ( var i = 0; i < length; i++ ) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
}
document.getElementById("result").innerHTML = result;
return result;
}
above code will produce random character of a specific length.
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.