Sorting Table Using Javascript Sort()
I am trying to sort a table. I've seen several jQuery and JavaScript solutions which do this through various means, however, haven't seen any that use JavaScript's native sort() m
Solution 1:
A td element doesn't have a .data property.
If you wanted the text content of the element, and if there's only a single text node, then use .firstChild before .data.
Then when that is done, you need to append the elements to the DOM. Sorting a JavaScript Array of elements doesn't have any impact on the DOM.
Also, instead of getElementsByTagName("td"), you can just use .cells.
b.sort(function(rowx, rowy) {
x_td = rowx.cells[index].firstChild.data;
y_td = rowy.cells[index].firstChild.data;
return x_td == y_td ? 0 : (x_td < y_td ? -1 : 1);
});
var parent = b[0].parentNode;
b.forEach(function(row) {
parent.appendChild(row);
});
If the content that you're comparing is numeric, you should convert the strings to numbers.
If they are text strings, then you should use .localeCompare().
return x_td.localeCompare(y_td);
Solution 2:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>All Sorting Techniques</title>
<script type="text/javascript">
var a = [21,5,7,318,3,4,9,1,34,67,33,109,23,156,283];
function bubbleSort(a)
{
var change;
do {
change = false;
for (var i=0; i < a.length-1; i++) {
if (a[i] > a[i+1]) {
var temp = a[i];
a[i] = a[i+1];
a[i+1] = temp;
change = true;
}
}
} while (change);
document.getElementById("bublsrt").innerHTML = "Bubble Sort Result is: "+a;
}
var b = [1,3,4,5,7,9,21,23,33,34,67,109,156,283,318];
function binarySearch(b, elem){
var left = 0;
var right = b.length - 1;
while (left <= right){
var mid = parseInt((left + right)/2);
if (b[mid] == elem)
return mid;
else if (b[mid] < elem)
left = mid + 1;
else
right = mid - 1;
}
return b.length;
}
function searchbinary(){
var x = document.getElementById("binarysearchtb").value;
var element= binarySearch(b,x);
if(element==b.length)
{
alert("no. not found");
}
else
{
alert("Element is at the index number: "+ element);
}
}
function quicksort(a)
{
if (a.length == 0)
return [];
var left = new Array();
var right = new Array();
var pivot = a[0];
for (var i = 1; i < a.length; i++) {
if (a[i] < pivot) {
left.push(a[i]);
} else {
right.push(a[i]);
}
}
return quicksort(left).concat(pivot, quicksort(right));
}
function quicksortresult()
{
quicksort(a);
document.getElementById("qcksrt").innerHTML = "Quick Sort Result is: "+quicksort(a);
}
function numeric(evt){
var theEvent = evt || window.event;
var key = theEvent.keyCode || theEvent.which;
key = String.fromCharCode(key);
var regex = /[0-9]|\./;
if (!regex.test(key)) {
theEvent.returnValue = false;
if (theEvent.preventDefault)
theEvent.preventDefault();
}
}
function insertionsorting(a)
{
var len = a.length;
var temp;
var i;
var j;
for (i=0; i < len; i++) {
temp = a[i];
for (j=i-1; j > -1 && a[j] > temp; j--) {
a[j+1] = a[j];
}
a[j+1] = temp;
}
document.getElementById("insrtsrt").innerHTML = "Insertion Sort Result is: "+a;
}
function hiddendiv()
{
document.getElementById("binarytbdiv").style.display = "none";
document.getElementById("Insertnotbdiv").style.display = "none";
}
function binarydivshow()
{
document.getElementById("binarytbdiv").style.display = "block";
}
function insertnodivshow()
{
document.getElementById("Insertnotbdiv").style.display = "block";
}
function insertno(a)
{
var extrano = document.getElementById("Insertnotb").value;
var b= a.push(extrano);
var change;
do {
change = false;
for (var i=0; i < a.length-1; i++) {
if (a[i] > a[i+1]) {
var temp = a[i];
a[i] = a[i+1];
a[i+1] = temp;
change = true;
}
}
} while (change);
document.getElementById("insrtnosearch").innerHTML = "Sorted List is: "+a;
alert("Index of "+extrano +" is " +a.indexOf(extrano));
}
</script>
</head>
<body onload="hiddendiv()">
<h1 align="center">All Type Of Sorting</h1>
<p align="center">Your Array is : 21,5,7,318,3,4,9,1,34,67,33,109,23,156,283</p>
<div id="main_div" align="center">
<div id="bubblesort">
<input type="button" id="bubblesortbutton" onclick="bubbleSort(a)" value="Bubble Sort">
<p id="bublsrt"></p>
</div><br>
<div id="quicksort">
<input type="button" id="quicksortbutton" onclick="quicksortresult()" value="Quick Sort">
<p id="qcksrt"></p>
</div><br>
<div id="insertionsort">
<input type="button" id="insertionsortbutton" onclick="insertionsorting(a)" value="Insertion Sort">
<p id="insrtsrt"></p>
</div><br>
<div id="binarysearch">
<input type="button" id="binarysearchbutton" onclick="binarydivshow();" value="Binary Search">
<div id="binarytbdiv">
<input type="text" id="binarysearchtb" placeholder="Enter a Number" onkeypress="numeric(event)"><br>
<input type="button" id="binarysearchtbbutton" value="Submit" onclick="searchbinary()">
<p id="binarysrch">Sorted List is : 1,3,4,5,7,9,21,23,33,34,67,109,156,283,318</p>
</div>
</div><br>
<div id="Insertno">
<input type="button" id="insertno" onclick="insertnodivshow()" value="Insert A Number">
<div id="Insertnotbdiv">
<input type="text" id="Insertnotb" placeholder="Enter a Number" onkeypress="numeric(event);"><br>
<input type="button" id="Insertnotbbutton" value="Submit" onclick="insertno(a)">
<p id="insrtnosearch"></p>
</div>
</div>
</div>
</body>
</html>
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