A demo of split method with HTML dropdown

JavaScript / HTML/ CSS Code

Output

<!DOCTYPE html>
<html>
<head>
<style>
.divclass {
  background: #3B505F;
  height: auto;
  width:350px;
  border-radius: 15px;
  padding:20px;
  font-size:16px;
  color:#fff;  
}
#splitted_string {
    background: #F7FB4D;
    color:#000;
    font-size:16px;
    font-weight:700;

} 
.btncls{
    background-color:#FC2209;
    border: #2e6da4;
  	font-family: Arial, Geneva, Arial, Helvetica,  sans-serif;
	font-size: 15px;
    color: #FFFFFF;
    letter-spacing: 1px;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: normal;

    border-radius: 4px;
    line-height: 1.5;
    text-decoration:none;
} 
</style>
</head>

<body>
<div class="divclass" id="repdemo"> 

<p><label>Select seperator: </label><select id="splitsep">
    <option value=".">Dot (.)</option>
    <option value=" ">Space</option>
    <option value=",">Comma</option>
    <option value="is">is</option>
    <option value="pieces">pieces</option>
    <option value="-">Hyphen</option>
</select>
</p>
<p><button class="btncls" onclick="splittxt()">Execute split method</button></p>
<p>Source String: </p>
<p id="src_string">"The JavaScript split method is used to break a given string into pieces by a specified separator like a period (.), comma, space, hyphen (-) or a word."</p>
</div>
<p id="splitted_string"></p> 

<script type="text/javascript">
function splittxt(){

    var src_str = document.getElementById("src_string").innerHTML;
    var split_seperator = document.getElementById("splitsep").value;
    var str_spl = src_str.split(split_seperator);
    var num;
    var display_split_strings = '<p>After split method:</p>';
    
    for (num=0; num < str_spl.length; num++){
        display_split_strings += str_spl[num] + "<BR>";
        }
        document.getElementById("splitted_string").innerHTML = display_split_strings;

}
</script>
</body>
</html>

Select seperator:

Source String:

"The JavaScript split method is used to break a given string into pieces by a specified separator like a period (.), comma, space, hyphen (-) or a word."