Here is a basic JavaScript example, which could be modified into an autocomplete control:
var people = ['Steven', 'Sean', 'Stefan', 'Sam', 'Nathan'];
function matchPeople(input) {
var reg = new RegExp(input.split('').join('\\w*').replace(/\W/, ""), 'i');
return people.filter(function(person) {
if (person.match(reg)) {
return person;
}
});
}
function changeInput(val) {
var autoCompleteResult = matchPeople(val);
document.getElementById("result").innerHTML = autoCompleteResult;
}
<input type="text" onkeyup="changeInput(this.value)">
<div id="result"></div>