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JS表格排序

2015-05-09 13:41 267 查看

var employees = []
employees[0] = {
name: "George",
age: 32,
retiredate: "March 12, 2014"
}
employees[1] = {
name: "Edward",
age: 17,
retiredate: "June 2, 2023"
}
employees[2] = {
name: "Christine",
age: 58,
retiredate: "December 20, 2036"
}
employees[3] = {
name: "Sarah",
age: 62,
retiredate: "April 30, 2020"
}

//如何对上述数据排序呢?
//实际上是利用arr.sort(function...)
//而不是将某一列的数据都找出来排好序后  再去找对应的行

function sortBy(arr, prop, descend) {
//descend表示升序还是降序
descend = descend ? 1 : -1;
arr.sort(function(a, b) {
if (a[prop] < b[prop]) {
return -1 * descend;
} else if (a[prop] > b[prop]) {
return 1 * descend;
} else return 0;
});
}
sortBy(employees, 'name', true);
console.log(employees);

;
(function($) {
$.fn.extend({
tableSort: function() {
console.log(this); //jQ对象的table
var colHeads = this.find('thead');
var tbody = this.find('tbody');
var rows = tbody.find('tr');
var desend = [];
colHeads.on('click', 'td', function(e) {
var idx = $(this).index();
desend[idx] = !desend[idx]; //每一列都有一个变量 经过一次排序后下次再排序是反序
var descendflag = desend[idx] ? 1 : -1;
rows.sort(function(v1, v2) {
if (v1.cells[idx].innerText < v2.cells[idx].innerText) {
return -1 * descendflag;
} else if (v1.cells[idx].innerText > v2.cells[idx].innerText) {
return 1 * descendflag;
} else {
return 0;
}
});
rows.each(function(idx, item) {
tbody.append(item);
})
});
}
})
})(jQuery);

$('#tableTest').tableSort();

function sortOrigin() {
var oTable = document.getElementById('tableTest');
var oHead = oTable.tHead;
var colHeads = oHead.getElementsByTagName('td');
var oTbody = oTable.tBodies[0];
var oBtn = document.getElementById('sort');
var arr = []; //用来存放每一个tr
var isAsc = true; //用来判断升序，还是降序

var colHeadsArr = [];
for (var i = 0, len = colHeads.length; i < len; i++) {
colHeadsArr.push(colHeads[i]);
}
//表头事件代理
oHead.addEventListener('click', function(e) {
var target = e.target;
if (target.tagName.toLowerCase() === 'td') {
var idx = colHeadsArr.indexOf(target); //对第几列进行排序
//和colHeads一样 oTbody.rows只是NodeList不是数组
for (var i = 0; i < oTbody.rows.length; i++) {
arr[i] = oTbody.rows[i];
}
//此时arr是行构成的数组
arr.sort(function(v1, v2) {
if (v1.cells[idx].innerText < v2.cells[idx].innerText) {
return -1;
} else if (v1.cells[idx].innerText > v2.cells[idx].innerText) {
return 1;
} else {
return 0;
}
});
for (var j = 0; j < arr.length; j++) {
oTbody.appendChild(arr[j]);
}
}
}, false);

}

所谓表格排序实际上是对象数组排序 --> []中的自定义sort函数

参考 http://www.cnblogs.com/xiao-t/archive/2012/12/27/2836248.html

<!DOCTYPE HTML>
<html>

<head>
<meta charset="utf-8">
<title>table排序</title>
</head>

<body>
<table id="tableTest" width="400" border="1">
<thead>
<tr>
<td>ID</td>
<td>Name</td>
<td>col1</td>
<td>COL2</td>
</tr>
</thead>
<tbody>
<tr>
<td>2</td>
<td>bbb</td>
<td>MANU</td>
<td>Znbsp;</td>
</tr>
<tr>
<td>5</td>
<td>eee</td>
<td>COLS</td>
<td>Ssp;</td>
</tr>
<tr>
<td>3</td>
<td>ccc</td>
<td>KK</td>
<td>bsp;</td>
</tr>
<tr>
<td>4</td>
<td>ddd</td>
<td>Dnbsp;</td>
<td>nbsp;</td>
</tr>
<tr>
<td>1</td>
<td>aaa</td>
<td>Pnbsp;</td>
<td>Mnbsp;</td>
</tr>
</tbody>
</table>
<input type="button" id="sort" value="表格排序" />
<script>
window.onload = function() {
var oTable = document.getElementById('tableTest');
var oHead = oTable.tHead;
var colHeads = oHead.getElementsByTagName('td');
var oTbody = oTable.tBodies[0];
var oBtn = document.getElementById('sort');
var arr = []; //用来存放每一个tr
var isAsc = true; //用来判断升序，还是降序

var colHeadsArr = [];
for (var i = 0, len = colHeads.length; i < len; i++) {
colHeadsArr.push(colHeads[i]);
}
//表头事件代理
oHead.addEventListener('click', function(e) {
var target = e.target;
if (target.tagName.toLowerCase() === 'td') {
var idx = colHeadsArr.indexOf(target); //对第几列进行排序
//和colHeads一样 oTbody.rows只是NodeList不是数组
for (var i = 0; i < oTbody.rows.length; i++) {
arr[i] = oTbody.rows[i];
}
//此时arr是行构成的数组
arr.sort(function(v1, v2) {
if (v1.cells[idx].innerText < v2.cells[idx].innerText) {
return -1;
} else if (v1.cells[idx].innerText > v2.cells[idx].innerText) {
return 1;
} else {
return 0;
}
});
for (var j = 0; j < arr.length; j++) {
oTbody.appendChild(arr[j]);
}
}
}, false);

}
</script>
</body>

</html>

接下来做成插件的样子

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