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Ajax type ahead - debounce and new DOM nodes #7

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Merged
oddwili merged 2 commits into from
Jun 28, 2019
Merged

Ajax type ahead - debounce and new DOM nodes #7

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a74d7be
create new DOM nodes
Jun 28, 2019
923190e
debounce function
Jun 28, 2019
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21 changes: 18 additions & 3 deletions ajax-type-ahead/script.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,8 @@ fetch(endpoint)

function matchWord(wordToMatch, cities) {
return cities.filter(place => {
const regex = new RegExp(wordToMatch, 'gi');
return place.city.match(regex) || place.state.match(regex);
const regex = new RegExp(wordToMatch, 'gi');
return place.city.match(regex) || place.state.match(regex);
});
}

Expand All @@ -38,6 +38,21 @@ function displayMatch() {
searchSuggestions = searchForm.querySelector('.suggestions');
}

// debounce from https://davidwalsh.name/javascript-debounce-function
function debounce(func, wait, immediate) {
var timeout;
return function() {
var context = this, args = arguments;
var later = function() {
timeout = null;
if (!immediate) func.apply(context, args);
};
var callNow = immediate && !timeout;
clearTimeout(timeout);
timeout = setTimeout(later, wait);
if (callNow) func.apply(context, args);
};
};

searchInput.addEventListener('change', displayMatch);
searchInput.addEventListener('keyup', displayMatch);
searchInput.addEventListener('keyup', debounce(displayMatch, 200));