To convert a string to a character array, use the substring() JavaScript method. This displays the character of the string one at a time as a character array.
Example
You can try to run the following code to convert a string to a character array −
<html>
<head>
<title>JavaScript Arrays</title>
</head>
<body>
<script>
var str = "Amit";
for (var i = 0, j = str.length; i < j; i++) {
alert(str.substring(i, i + 1));
}
</script>
</body>
</html>