Как сделать - сортировать таблицу по алфавиту
Узнайте, как сортировать HTML-таблицу, используя JavaScript.
Нажмите кнопку, чтобы сортировать таблицу по алфавиту, основываясь на имени клиента:
Name | Country |
---|---|
Berglunds snabbkop | Sweden |
North/South | UK |
Alfreds Futterkiste | Germany |
Koniglich Essen | Germany |
Magazzini Alimentari Riuniti | Italy |
Paris specialites | France |
Island Trading | UK |
Laughing Bacchus Winecellars | Canada |
Создание функции сортировки
Пример
function sortTable() {
var table, rows, switching, i, x, y,
shouldSwitch;
table = document.getElementById("myTable");
switching = true;
/* Make a loop that will continue until
no switching has been done: */
while (switching) {
// Start by saying: no switching is done:
switching =
false;
rows = table.getElementsByTagName("TR");
/* Loop through all table rows (except the
first, which
contains table headers): */
for (i = 1; i < (rows.length
- 1); i++) {
// Start by saying there should
be no switching:
shouldSwitch = false;
/* Get the two elements you want to compare,
one from current row and one from the next: */
x = rows[i].getElementsByTagName("TD")[0];
y
= rows[i + 1].getElementsByTagName("TD")[0];
// Check if the two rows should switch place:
if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
if (shouldSwitch) {
/* If a switch has been marked, make the switch
and mark that a switch has been done: */
rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
switching = true;
}
}
}
Сортировка таблицы, щелкнув на заголовки
Щелкните заголовки, чтобы отсортировать таблицу.
Нажмите "имя", чтобы сортировать по именам, и "страна", чтобы сортировать по стране.
При первом щелчке направление сортировки по возрастанию (от a до Z).
Нажмите еще раз, и направление сортировки будет по убыванию (от Z до A):
Name | Country |
---|---|
Berglunds snabbkop | Sweden |
North/South | UK |
Alfreds Futterkiste | Germany |
Koniglich Essen | Germany |
Magazzini Alimentari Riuniti | Italy |
Paris specialites | France |
Island Trading | UK |
Laughing Bacchus Winecellars | Canada |
Пример
<table id="myTable2">
<tr>
<!--When a header is clicked, run the
sortTable function, with a parameter,
0 for sorting by names, 1 for sorting
by country: -->
<th onclick="sortTable(0)">Name</th>
<th onclick="sortTable(1)">Country</th>
</tr>
...
<script>
function sortTable(n) {
var table,
rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
table
= document.getElementById("myTable2");
switching = true;
// Set the sorting direction to ascending:
dir = "asc";
/* Make a loop that will continue until
no switching has been done: */
while (switching) {
// Start by saying: no switching is
done:
switching = false;
rows =
table.getElementsByTagName("TR");
/* Loop through all
table rows (except the
first, which contains table
headers): */
for (i = 1; i < (rows.length - 1); i++) {
// Start by saying there should be no switching:
shouldSwitch = false;
/* Get the two elements
you want to compare,
one from current row
and one from the next: */
x = rows[i].getElementsByTagName("TD")[n];
y = rows[i + 1].getElementsByTagName("TD")[n];
/* Check if the two rows should switch place,
based on the direction, asc or desc: */
if (dir
== "asc") {
if (x.innerHTML.toLowerCase()
> y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
} else if (dir == "desc") {
if (x.innerHTML.toLowerCase()
< y.innerHTML.toLowerCase()) {
// If so, mark as a switch and break the loop:
shouldSwitch = true;
break;
}
}
}
if (shouldSwitch) {
/* If a switch has been marked, make the switch
and mark that a switch has been done: */
rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
switching = true;
// Each time a switch is
done, increase this count by 1:
switchcount
++;
} else {
/* If no
switching has been done AND the direction is "asc",
set the direction to "desc" and run the while loop again. */
if (switchcount == 0 && dir == "asc") {
dir = "desc";
switching = true;
}
}
}
}
</script>
Сортировать таблицу чисел
Пример
if (Number(x.innerHTML) > Number(y.innerHTML)) {
shouldSwitch = true;
break;
}