finish JS30 wesbos#6

Author: Nadav35

06 - Type Ahead/index-START.html

@@ -27,13 +27,42 @@
   getCities().then(ret => cities.push(...ret));
 
   function findMatches(wordToMatch, cities) {
+    if (wordToMatch === "") return [];
     return cities.filter(place => {
 
       const regex = new RegExp(wordToMatch, 'gi');
       return place.city.match(regex) || place.state.match(regex);
     })
   }
+
+  function numberWithCommas(x) {
+    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+  }
+
+  function displayMatches() {
+    const matchArray = findMatches(this.value, cities);
+    const html = matchArray.map(place => {
+      const regex = new RegExp(this.value, 'gi');
+      const cityName = place.city.replace(regex, `<span class="hl">${this.value}</span>`);
+      const stateyName = place.state.replace(regex, `<span class="hl">${this.value}</span>`);
+      return `
+        <li>
+          <span class="name">${cityName}, ${stateyName}</span>
+          <span class="population">${numberWithCommas(place.population)}</span>
+        </li>
+      `;
+        }).join('');
+    suggestions.innerHTML = html;
+    
+    
+  }
 
+  const searchInput = document.querySelector('.search');
+  const suggestions = document.querySelector('.suggestions');
+
+  searchInput.addEventListener('change', displayMatches);
+  searchInput.addEventListener('keyup', displayMatches);
+
 
 
 </script>