如何在可排序表上滚动时保持标题行固定 [英] How to keep header row fixed while scrolling on a sortable table
本文介绍了如何在可排序表上滚动时保持标题行固定的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经看到许多方法使标题固定在标准表上，但通常这涉及克隆表（以匹配变量宽度）。这当然不适合我，因为标题是可点击的，允许人们排序某些行的内容。
I have seen many ways to make the header fixed on a standard table, but usually this involves cloning the table (to match the variable widths). This of course would not work for me as the header is clickable, allowing people to sort the contents of certain rows.
因此，有一种方法基本上冻结
So, is there a way to essentially 'freeze' the header row while still retaining the functionality of the sort?
这里是基本的表代码（所有的css保存在'stylesheet'中，用于清洁和类似js）
Here is the basic table code (all css kept in 'stylesheet' for cleanliness & likewise with js)
var stIsIE = /*@cc_on!@*/false;
sorttable = {
init: function() {
// quit if this function has already been called
if (arguments.callee.done) return;
// flag this function so we don't do the same thing twice
arguments.callee.done = true;
// kill the timer
if (_timer) clearInterval(_timer);
if (!document.createElement || !document.getElementsByTagName) return;
sorttable.DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/;
forEach(document.getElementsByTagName('table'), function(table) {
if (table.className.search(/\bsortable\b/) != -1) {
sorttable.makeSortable(table);
}
});
},
makeSortable: function(table) {
if (table.getElementsByTagName('thead').length == 0) {
// table doesn't have a tHead. Since it should have, create one and
// put the first table row in it.
the = document.createElement('thead');
the.appendChild(table.rows[0]);
table.insertBefore(the,table.firstChild);
}
// Safari doesn't support table.tHead, sigh
if (table.tHead == null) table.tHead = table.getElementsByTagName('thead')[0];
if (table.tHead.rows.length != 1) return; // can't cope with two header rows
// Sorttable v1 put rows with a class of "sortbottom" at the bottom (as
// "total" rows, for example). This is B&R, since what you're supposed
// to do is put them in a tfoot. So, if there are sortbottom rows,
// for backwards compatibility, move them to tfoot (creating it if needed).
sortbottomrows = [];
for (var i=0; i<table.rows.length; i++) {
if (table.rows[i].className.search(/\bsortbottom\b/) != -1) {
sortbottomrows[sortbottomrows.length] = table.rows[i];
}
}
if (sortbottomrows) {
if (table.tFoot == null) {
// table doesn't have a tfoot. Create one.
tfo = document.createElement('tfoot');
table.appendChild(tfo);
}
for (var i=0; i<sortbottomrows.length; i++) {
tfo.appendChild(sortbottomrows[i]);
}
delete sortbottomrows;
}
// work through each column and calculate its type
headrow = table.tHead.rows[0].cells;
for (var i=0; i<headrow.length; i++) {
// manually override the type with a sorttable_type attribute
if (!headrow[i].className.match(/\bsorttable_nosort\b/)) { // skip this col
mtch = headrow[i].className.match(/\bsorttable_([a-z0-9]+)\b/);
if (mtch) { override = mtch[1]; }
if (mtch && typeof sorttable["sort_"+override] == 'function') {
headrow[i].sorttable_sortfunction = sorttable["sort_"+override];
} else {
headrow[i].sorttable_sortfunction = sorttable.guessType(table,i);
}
// make it clickable to sort
headrow[i].sorttable_columnindex = i;
headrow[i].sorttable_tbody = table.tBodies[0];
dean_addEvent(headrow[i],"click", sorttable.innerSortFunction = function(e) {
if (this.className.search(/\bsorttable_sorted\b/) != -1) {
// if we're already sorted by this column, just
// reverse the table, which is quicker
sorttable.reverse(this.sorttable_tbody);
this.className = this.className.replace('sorttable_sorted',
'sorttable_sorted_reverse');
this.removeChild(document.getElementById('sorttable_sortfwdind'));
sortrevind = document.createElement('span');
sortrevind.id = "sorttable_sortrevind";
sortrevind.innerHTML = stIsIE ? ' <font face="webdings">5</font>' : ' ▴';
this.appendChild(sortrevind);
return;
}
if (this.className.search(/\bsorttable_sorted_reverse\b/) != -1) {
// if we're already sorted by this column in reverse, just
// re-reverse the table, which is quicker
sorttable.reverse(this.sorttable_tbody);
this.className = this.className.replace('sorttable_sorted_reverse',
'sorttable_sorted');
this.removeChild(document.getElementById('sorttable_sortrevind'));
sortfwdind = document.createElement('span');
sortfwdind.id = "sorttable_sortfwdind";
sortfwdind.innerHTML = stIsIE ? ' <font face="webdings">6</font>' : ' ▾';
this.appendChild(sortfwdind);
return;
}
// remove sorttable_sorted classes
theadrow = this.parentNode;
forEach(theadrow.childNodes, function(cell) {
if (cell.nodeType == 1) { // an element
cell.className = cell.className.replace('sorttable_sorted_reverse','');
cell.className = cell.className.replace('sorttable_sorted','');
}
});
sortfwdind = document.getElementById('sorttable_sortfwdind');
if (sortfwdind) { sortfwdind.parentNode.removeChild(sortfwdind); }
sortrevind = document.getElementById('sorttable_sortrevind');
if (sortrevind) { sortrevind.parentNode.removeChild(sortrevind); }
this.className += ' sorttable_sorted';
sortfwdind = document.createElement('span');
sortfwdind.id = "sorttable_sortfwdind";
sortfwdind.innerHTML = stIsIE ? ' <font face="webdings">6</font>' : ' ▾';
this.appendChild(sortfwdind);
// build an array to sort. This is a Schwartzian transform thing,
// i.e., we "decorate" each row with the actual sort key,
// sort based on the sort keys, and then put the rows back in order
// which is a lot faster because you only do getInnerText once per row
row_array = [];
col = this.sorttable_columnindex;
rows = this.sorttable_tbody.rows;
for (var j=0; j<rows.length; j++) {
row_array[row_array.length] = [sorttable.getInnerText(rows[j].cells[col]), rows[j]];
}
/* If you want a stable sort, uncomment the following line */
//sorttable.shaker_sort(row_array, this.sorttable_sortfunction);
/* and comment out this one */
row_array.sort(this.sorttable_sortfunction);
tb = this.sorttable_tbody;
for (var j=0; j<row_array.length; j++) {
tb.appendChild(row_array[j][1]);
}
delete row_array;
});
}
}
},
guessType: function(table, column) {
// guess the type of a column based on its first non-blank row
sortfn = sorttable.sort_alpha;
for (var i=0; i<table.tBodies[0].rows.length; i++) {
text = sorttable.getInnerText(table.tBodies[0].rows[i].cells[column]);
if (text != '') {
if (text.match(/^-?[£$¤]?[\d,.]+%?$/)) {
return sorttable.sort_numeric;
}
// check for a date: dd/mm/yyyy or dd/mm/yy
// can have / or . or - as separator
// can be mm/dd as well
possdate = text.match(sorttable.DATE_RE)
if (possdate) {
// looks like a date
first = parseInt(possdate[1]);
second = parseInt(possdate[2]);
if (first > 12) {
// definitely dd/mm
return sorttable.sort_ddmm;
} else if (second > 12) {
return sorttable.sort_mmdd;
} else {
// looks like a date, but we can't tell which, so assume
// that it's dd/mm (English imperialism!) and keep looking
sortfn = sorttable.sort_ddmm;
}
}
}
}
return sortfn;
},
getInnerText: function(node) {
// gets the text we want to use for sorting for a cell.
// strips leading and trailing whitespace.
// this is *not* a generic getInnerText function; it's special to sorttable.
// for example, you can override the cell text with a customkey attribute.
// it also gets .value for <input> fields.
if (!node) return "";
hasInputs = (typeof node.getElementsByTagName == 'function') &&
node.getElementsByTagName('input').length;
if (node.getAttribute("sorttable_customkey") != null) {
return node.getAttribute("sorttable_customkey");
}
else if (typeof node.textContent != 'undefined' && !hasInputs) {
return node.textContent.replace(/^\s+|\s+$/g, '');
}
else if (typeof node.innerText != 'undefined' && !hasInputs) {
return node.innerText.replace(/^\s+|\s+$/g, '');
}
else if (typeof node.text != 'undefined' && !hasInputs) {
return node.text.replace(/^\s+|\s+$/g, '');
}
else {
switch (node.nodeType) {
case 3:
if (node.nodeName.toLowerCase() == 'input') {
return node.value.replace(/^\s+|\s+$/g, '');
}
case 4:
return node.nodeValue.replace(/^\s+|\s+$/g, '');
break;
case 1:
case 11:
var innerText = '';
for (var i = 0; i < node.childNodes.length; i++) {
innerText += sorttable.getInnerText(node.childNodes[i]);
}
return innerText.replace(/^\s+|\s+$/g, '');
break;
default:
return '';
}
}
},
reverse: function(tbody) {
// reverse the rows in a tbody
newrows = [];
for (var i=0; i<tbody.rows.length; i++) {
newrows[newrows.length] = tbody.rows[i];
}
for (var i=newrows.length-1; i>=0; i--) {
tbody.appendChild(newrows[i]);
}
delete newrows;
},
/* sort functions
each sort function takes two parameters, a and b
you are comparing a[0] and b[0] */
sort_numeric: function(a,b) {
aa = parseFloat(a[0].replace(/[^0-9.-]/g,''));
if (isNaN(aa)) aa = 0;
bb = parseFloat(b[0].replace(/[^0-9.-]/g,''));
if (isNaN(bb)) bb = 0;
return aa-bb;
},
sort_alpha: function(a,b) {
if (a[0].toLowerCase()==b[0].toLowerCase()) return 0;
if (a[0].toLowerCase()<b[0].toLowerCase()) return -1;
return 1;
},
sort_ddmm: function(a,b) {
mtch = a[0].match(sorttable.DATE_RE);
y = mtch[3]; m = mtch[2]; d = mtch[1];
if (m.length == 1) m = '0'+m;
if (d.length == 1) d = '0'+d;
dt1 = y+m+d;
mtch = b[0].match(sorttable.DATE_RE);
y = mtch[3]; m = mtch[2]; d = mtch[1];
if (m.length == 1) m = '0'+m;
if (d.length == 1) d = '0'+d;
dt2 = y+m+d;
if (dt1==dt2) return 0;
if (dt1<dt2) return -1;
return 1;
},
sort_mmdd: function(a,b) {
mtch = a[0].match(sorttable.DATE_RE);
y = mtch[3]; d = mtch[2]; m = mtch[1];
if (m.length == 1) m = '0'+m;
if (d.length == 1) d = '0'+d;
dt1 = y+m+d;
mtch = b[0].match(sorttable.DATE_RE);
y = mtch[3]; d = mtch[2]; m = mtch[1];
if (m.length == 1) m = '0'+m;
if (d.length == 1) d = '0'+d;
dt2 = y+m+d;
if (dt1==dt2) return 0;
if (dt1<dt2) return -1;
return 1;
},
shaker_sort: function(list, comp_func) {
// A stable sort function to allow multi-level sorting of data
// see: http://en.wikipedia.org/wiki/Cocktail_sort
// thanks to Joseph Nahmias
var b = 0;
var t = list.length - 1;
var swap = true;
while(swap) {
swap = false;
for(var i = b; i < t; ++i) {
if ( comp_func(list[i], list[i+1]) > 0 ) {
var q = list[i]; list[i] = list[i+1]; list[i+1] = q;
swap = true;
}
} // for
t--;
if (!swap) break;
for(var i = t; i > b; --i) {
if ( comp_func(list[i], list[i-1]) < 0 ) {
var q = list[i]; list[i] = list[i-1]; list[i-1] = q;
swap = true;
}
} // for
b++;
} // while(swap)
}
}
/* ******************************************************************
Supporting functions: bundled here to avoid depending on a library
****************************************************************** */
// Dean Edwards/Matthias Miller/John Resig
/* for Mozilla/Opera9 */
if (document.addEventListener) {
document.addEventListener("DOMContentLoaded", sorttable.init, false);
}
/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
var script = document.getElementById("__ie_onload");
script.onreadystatechange = function() {
if (this.readyState == "complete") {
sorttable.init(); // call the onload handler
}
};
/*@end @*/
/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) { // sniff
var _timer = setInterval(function() {
if (/loaded|complete/.test(document.readyState)) {
sorttable.init(); // call the onload handler
}
}, 10);
}
/* for other browsers */
window.onload = sorttable.init;
// written by Dean Edwards, 2005
// with input from Tino Zijdel, Matthias Miller, Diego Perini
// http://dean.edwards.name/weblog/2005/10/add-event/
function dean_addEvent(element, type, handler) {
if (element.addEventListener) {
element.addEventListener(type, handler, false);
} else {
// assign each event handler a unique ID
if (!handler.$$guid) handler.$$guid = dean_addEvent.guid++;
// create a hash table of event types for the element
if (!element.events) element.events = {};
// create a hash table of event handlers for each element/event pair
var handlers = element.events[type];
if (!handlers) {
handlers = element.events[type] = {};
// store the existing event handler (if there is one)
if (element["on" + type]) {
handlers[0] = element["on" + type];
}
}
// store the event handler in the hash table
handlers[handler.$$guid] = handler;
// assign a global event handler to do all the work
element["on" + type] = handleEvent;
}
};
// a counter used to create unique IDs
dean_addEvent.guid = 1;
function removeEvent(element, type, handler) {
if (element.removeEventListener) {
element.removeEventListener(type, handler, false);
} else {
// delete the event handler from the hash table
if (element.events && element.events[type]) {
delete element.events[type][handler.$$guid];
}
}
};
function handleEvent(event) {
var returnValue = true;
// grab the event object (IE uses a global event object)
event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
// get a reference to the hash table of event handlers
var handlers = this.events[event.type];
// execute each event handler
for (var i in handlers) {
this.$$handleEvent = handlers[i];
if (this.$$handleEvent(event) === false) {
returnValue = false;
}
}
return returnValue;
};
function fixEvent(event) {
// add W3C standard event methods
event.preventDefault = fixEvent.preventDefault;
event.stopPropagation = fixEvent.stopPropagation;
return event;
};
fixEvent.preventDefault = function() {
this.returnValue = false;
};
fixEvent.stopPropagation = function() {
this.cancelBubble = true;
}
// Dean's forEach: http://dean.edwards.name/base/forEach.js
/*
forEach, version 1.0
Copyright 2006, Dean Edwards
License: http://www.opensource.org/licenses/mit-license.php
*/
// array-like enumeration
if (!Array.forEach) { // mozilla already supports this
Array.forEach = function(array, block, context) {
for (var i = 0; i < array.length; i++) {
block.call(context, array[i], i, array);
}
};
}
// generic enumeration
Function.prototype.forEach = function(object, block, context) {
for (var key in object) {
if (typeof this.prototype[key] == "undefined") {
block.call(context, object[key], key, object);
}
}
};
// character enumeration
String.forEach = function(string, block, context) {
Array.forEach(string.split(""), function(chr, index) {
block.call(context, chr, index, string);
});
};
// globally resolve forEach enumeration
var forEach = function(object, block, context) {
if (object) {
var resolve = Object; // default
if (object instanceof Function) {
// functions have a "length" property
resolve = Function;
} else if (object.forEach instanceof Function) {
// the object implements a custom forEach method so use that
object.forEach(block, context);
return;
} else if (typeof object == "string") {
// the object is a string
resolve = String;
} else if (typeof object.length == "number") {
// the object is array-like
resolve = Array;
}
resolve.forEach(object, block, context);
}
};
div#main { margin-left:1%; margin-right:1%; }
table.sortable th:not(.sorttable_sorted):not(.sorttable_sorted_reverse):not(.sorttable_nosort):after {content: " \25B4\25BE"}
table.sortable tbody tr:nth-child(2n) td {background: #ffcccc;}
table.sortable tbody tr:nth-child(2n+1) td {background: #ccfffff;}
.sm { font-size:small; }
.text { text-align:center; }
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>RuneScape Quest Checklist</title>
<link rel="stylesheet" href="stylesheet.css" type="text/css" charset="utf-8">
<script type="text/javascript" src="sorttable.js"></script>
</head>
<body>
<div id="main">
<table class="sortable" border="0" cellpadding="0" cellspacing="0" width="100%">
<thead>
<tr>
<th class="sorttable_nosort" title="Unsortable" style="width: 55px;"><strong>Done</strong></th>
<th title="Click to sort"><strong>Quest Name</strong></th>
<th title="Click to sort"><strong>Difficulty</strong></th>
<th title="Click to sort"><strong>Length</strong></th>
<th class="sorttable_nosort" title="Unsortable"><strong>Skill Req.</strong></th>
<th class="sorttable_nosort" title="Unsortable"><strong>Quest Req.</strong></th>
<th title="Click to sort"><strong>QP</strong></th>
<th class="sorttable_nosort" title="Unsortable"><strong>Rewards</strong></th>
<th title="Click to sort"><strong>Free/Members</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td class="sm text"><input name="done[1]" value="1" type="checkbox"></td>
<td class="sm text">Quest Name</td>
<td class="sm text"><div style="display: none;">1</div>Novice (to Grandmaster)</td>
<td class="sm text"><div style="display: none;">1</div>Short (to Very Long)</td>
<td class="sm text">Various Skills</td>
<td class="sm text">Various Quests</td>
<td class="sm text">1 (to 3)</td>
<td class="sm">
<ul>
<li>Reward 1</li>
<li>Reward 2</li>
<li>etc...</li>
</ul>
</td>
<td class="sm text">Membership req (or not)</td>
</tr>
</tbody>
</table>
</div>
</body>
</html>
推荐答案
试试看这个例子
这个链接也对你有帮助。 表格的固定标题
this link also helpful to you. fixed header of table
html,
body {
margin: 0;
padding: 0;
height: 100%;
}
section {
position: relative;
border: 1px solid #000;
padding-top: 37px;
background: #500;
}
section.positioned {
position: absolute;
top: 100px;
left: 100px;
width: 800px;
box-shadow: 0 0 15px #333;
}
.container {
overflow-y: auto;
height: 200px;
}
table {
border-spacing: 0;
width: 100%;
}
td + td {
border-left: 1px solid #eee;
}
td,
th {
border-bottom: 1px solid #eee;
background: #ddd;
color: #000;
padding: 10px 25px;
}
th {
height: 0;
line-height: 0;
padding-top: 0;
padding-bottom: 0;
color: transparent;
border: none;
white-space: nowrap;
}
th div {
position: absolute;
background: transparent;
color: #fff;
padding: 9px 25px;
top: 0;
margin-left: -25px;
line-height: normal;
border-left: 1px solid #800;
}
th:first-child div {
border: none;
}
<section class="">
<div class="container">
<table>
<thead>
<tr class="header">
<th>
Table attribute name
<div>Table attribute name</div>
</th>
<th>
Value
<div>Value</div>
</th>
<th>
Description
<div>Description</div>
</th>
</tr>
</thead>
<tbody>
<tr>
<td>align</td>
<td>left, center, right</td>
<td>Not supported in HTML5. Deprecated in HTML 4.01. Specifies the alignment of a table according to surrounding text</td>
</tr>
<tr>
<td>bgcolor</td>
<td>rgb(x,x,x), #xxxxxx, colorname</td>
<td>Not supported in HTML5. Deprecated in HTML 4.01. Specifies the background color for a table</td>
</tr>
<tr>
<td>border</td>
<td>1,""</td>
<td>Specifies whether the table cells should have borders or not</td>
</tr>
<tr>
<td>cellpadding</td>
<td>pixels</td>
<td>Not supported in HTML5. Specifies the space between the cell wall and the cell content</td>
</tr>
<tr>
<td>cellspacing</td>
<td>pixels</td>
<td>Not supported in HTML5. Specifies the space between cells</td>
</tr>
<tr>
<td>frame</td>
<td>void, above, below, hsides, lhs, rhs, vsides, box, border</td>
<td>Not supported in HTML5. Specifies which parts of the outside borders that should be visible</td>
</tr>
<tr>
<td>rules</td>
<td>none, groups, rows, cols, all</td>
<td>Not supported in HTML5. Specifies which parts of the inside borders that should be visible</td>
</tr>
<tr>
<td>summary</td>
<td>text</td>
<td>Not supported in HTML5. Specifies a summary of the content of a table</td>
</tr>
<tr>
<td>width</td>
<td>pixels, %</td>
<td>Not supported in HTML5. Specifies the width of a table</td>
</tr>
</tbody>
</table>
</div>
</section>
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