hide/disaply button added

labs/lab3/JavaScript/main.js

@@ -1,13 +1,15 @@
-document.addEventListener("DOMContentLoaded", function() {
+document.addEventListener("DOMContentLoaded", function () {
-   showTable('build', buildings);
+    showTable('build', buildings);
     let tableIsDisplayed = true;
-    tableVisibilityButton.addEventListener("click",()=>{
+    tableVisibilityButton.addEventListener("click", () => {
-        if(tableIsDisplayed){
+        if (tableIsDisplayed) {
-
+            clearTable('build')
-        }else{
+            tableVisibilityButton.innerHTML = "Показать таблицу";
-           showTable('build', buildings);
+        } else {
+            showTable('build', buildings);
+            tableVisibilityButton.innerHTML = "Скрыть таблицу";
         }
-
+        tableIsDisplayed = !tableIsDisplayed;
-    } )
+    })
 
 })

labs/lab3/JavaScript/table.js

@@ -26,4 +26,11 @@ const showTable = (idTable, data) => {
 		.enter()
 		.append("th")
 		.text(d => d);
-}
+}
+
+const clearTable = (idTable) => {
+    const table = document.getElementById(idTable);
+    while (table.children.length > 0) {
+        table.removeChild(table.children[0]);
+    }
+}