这个表排序jQuery脚本是如何工作的？ jQuery的排序插件 演示
单击标题（水果/数量）。 果 量 葡萄 15 苹果 4. var th=jQuery（'th'）， li=jQuery（'li'）， 逆=假； 点击（函数（）{ 变量头=$（此）， index=header.index（）； 标题 .closest（'表'） .find（'td'）） .filter（函数（）{ 返回$（this）.index（）==索引； }) .排序（功能（a、b）{ a=$（a.text（）； b=$（b.text（）； 返回( 伊斯南（a）|伊斯南（b）？ a>b:+a>+b ) ? 逆？-1:1： 逆？1:-1； }，函数（）{ 返回此.parentNode； }); 逆=！逆； }); 在上面的程序中，当我单击这个表排序jQuery脚本是如何工作的？ jQuery的排序插件 演示,jquery,jquery-ui,jquery-plugins,Jquery,Jquery Ui,Jquery Plugins,单击标题（水果/数量）。 果 量 葡萄 15 苹果 4. var th=jQuery（'th'）， li=jQuery（'li'）， 逆=假； 点击（函数（）{ 变量头=$（此）， index=header.index（）； 标题 .closest（'表'） .find（'td'）） .filter（函数（）{ 返回$（this）.index（）==索引； }) .排序（功能（a、b）{ a=$（a.text（）； b=$（b.text（）； 返回( 伊斯南（a）|伊斯南（b）？ a>b:+a>
.sort- 注释中的解释：
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Sort plugin for jQuery</title>
</head>
<body>
<h1>Demo</h1>
<p>Click on the headers (fruit/quantity).</p>
<table>
<thead>
<tr>
<th>Fruit</th>
<th>Quantity</th>
</tr>
</thead>
<tbody>
<tr>
<td>Grape</td>
<td>15</td>
</tr>
<tr>
<td>Apple</td>
<td>4</td>
</tr>
</tbody>
</table>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script src="jquery.sort.js"></script>
<script>
var th = jQuery('th'),
li = jQuery('li'),
inverse = false;
th.click(function(){
var header = $(this),
index = header.index();
header
.closest('table')
.find('td')
.filter(function(){
return $(this).index() === index;
})
.sort(function(a, b){
a = $(a).text();
b = $(b).text();
return (
isNaN(a) || isNaN(b) ?
a > b : +a > +b
) ?
inverse ? -1 : 1 :
inverse ? 1 : -1;
}, function(){
return this.parentNode;
});
inverse = !inverse;
});
</script>
</body>
</html>
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
th.click(function(){
var header = $(this), // get the table header as a JQuery object
index = header.index(); // get the index - column number - of the header
header
.closest('table') // get the table that contains the header
.find('td') // find all the td objects
.filter(function(){
return $(this).index() === index; // but filter that list so that only td's in the relevant column are selected
})
.sort(function(a, b){ // use the external 'sort' function (JQuery plugin) on our list of table data, and sort using this anonymous function to compare
a = $(a).text(); // compare the text content of two td elements, using alphabetic or numeric ordering where appropriate
b = $(b).text();
return (
isNaN(a) || isNaN(b) ?
a > b : +a > +b
) ?
inverse ? -1 : 1 : // and invert the sort order if the 'inverse' flag is true
inverse ? 1 : -1;
}, function(){
return this.parentNode; // the sort function returns a list of sorted elements - so returning the td parent returns the row, which means it sorts the table rows
});
inverse = !inverse; // toggle the inverse flag so that multiple clicks on the header invert the order
});
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
isNaN("hi"):true
isNaN(8): false
isNaN("8"): false
compare("hi", "there"): false
compare("there", "hi"): true
compare(2, 4): false
compare(4, 2): true
compare("hi", 2): false
+a > +b
+isNaN("hi"):true
isNaN(8): false
isNaN("8"): false
compare("hi", "there"): false
compare("there", "hi"): true
compare(2, 4): false
compare(4, 2): true
compare("hi", 2): false
+a > +b
…它仅为对象应用默认的
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Sort plugin for jQuery</title>
</head>
<body>
<h1>Demo</h1>
<p>Click on the headers (fruit/quantity).</p>
<table>
<thead>
<tr>
<th>Fruit</th>
<th>Quantity</th>
</tr>
</thead>
<tbody>
<tr>
<td>Grape</td>
<td>15</td>
</tr>
<tr>
<td>Apple</td>
<td>4</td>
</tr>
</tbody>
</table>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script src="jquery.sort.js"></script>
<script>
var th = jQuery('th'),
li = jQuery('li'),
inverse = false;
th.click(function(){
var header = $(this),
index = header.index();
header
.closest('table')
.find('td')
.filter(function(){
return $(this).index() === index;
})
.sort(function(a, b){
a = $(a).text();
b = $(b).text();
return (
isNaN(a) || isNaN(b) ?
a > b : +a > +b
) ?
inverse ? -1 : 1 :
inverse ? 1 : -1;
}, function(){
return this.parentNode;
});
inverse = !inverse;
});
</script>
</body>
</html>
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
th.click(function(){
var header = $(this), // get the table header as a JQuery object
index = header.index(); // get the index - column number - of the header
header
.closest('table') // get the table that contains the header
.find('td') // find all the td objects
.filter(function(){
return $(this).index() === index; // but filter that list so that only td's in the relevant column are selected
})
.sort(function(a, b){ // use the external 'sort' function (JQuery plugin) on our list of table data, and sort using this anonymous function to compare
a = $(a).text(); // compare the text content of two td elements, using alphabetic or numeric ordering where appropriate
b = $(b).text();
return (
isNaN(a) || isNaN(b) ?
a > b : +a > +b
) ?
inverse ? -1 : 1 : // and invert the sort order if the 'inverse' flag is true
inverse ? 1 : -1;
}, function(){
return this.parentNode; // the sort function returns a list of sorted elements - so returning the td parent returns the row, which means it sorts the table rows
});
inverse = !inverse; // toggle the inverse flag so that multiple clicks on the header invert the order
});
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
function compare(a, b) {
return isNaN(a) || isNaN(b) ? a > b : +a > +b;
}
log("isNaN(\"hi\"):" + isNaN("hi"));
log("isNaN(8): " + isNaN(8));
log("isNaN(\"8\"): " + isNaN("8"));
log("compare(\"hi\", \"there\"): " + compare("hi", "there"));
log("compare(\"there\", \"hi\"): " + compare("there", "hi"));
log("compare(2, 4): " + compare(2, 4));
log("compare(4, 2): " + compare(4, 2));
log("compare(\"hi\", 2): " + compare("hi", 2));
isNaN("hi"):true
isNaN(8): false
isNaN("8"): false
compare("hi", "there"): false
compare("there", "hi"): true
compare(2, 4): false
compare(4, 2): true
compare("hi", 2): false
+a > +b
+isNaN("hi"):true
isNaN(8): false
isNaN("8"): false
compare("hi", "there"): false
compare("there", "hi"): true
compare(2, 4): false
compare(4, 2): true
compare("hi", 2): false
+a > +b
…它仅为对象应用默认的