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@w3collective
Created March 23, 2022 23:26
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Autocomplete search using vanilla JavaScript
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Create an autocomplete search using vanilla JavaScript</title>
</head>
<body>
<div>
<input type="text" id="autocomplete" placeholder="Select a color..."></input>
<ul id="results"></ul>
</div>
<script>
const data = ["red", "blue", "green", "yellow", "purple", "orange", "black", "white", "brown"];
const autocomplete = document.getElementById("autocomplete");
const resultsHTML = document.getElementById("results");
autocomplete.oninput = function () {
let results = [];
const userInput = this.value;
resultsHTML.innerHTML = "";
if (userInput.length > 0) {
results = getResults(userInput);
resultsHTML.style.display = "block";
for (i = 0; i < results.length; i++) {
resultsHTML.innerHTML += "<li>" + results[i] + "</li>";
}
}
};
function getResults(input) {
const results = [];
for (i = 0; i < data.length; i++) {
if (input === data[i].slice(0, input.length)) {
results.push(data[i]);
}
}
return results;
}
resultsHTML.onclick = function (event) {
const setValue = event.target.innerText;
autocomplete.value = setValue;
this.innerHTML = "";
};
</script>
</body>
</html>
@giacomomarchioro
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giacomomarchioro commented May 5, 2022

Very nice! I am not sure it is really an autocomplete (because you can't complete the input automatically...) but at least it lists the possible choices.

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