如何修改现有的Javascript代码或添加一些代码，以便能够通过单击按钮从HTML表中删除突出显示的（选定行）？
使用jQuery框架也很好。
<!DOCTYPE html>
<html>
<head>
<title>Table Row Demo</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">
tr.normal td {
color: black;
background-color: white;
}
tr.highlighted td {
color: white;
background-color: red;
}
</style>
<script type="text/javascript">
window.onload = function() {
test()
}
function test() {
var trows = document.getElementById('mstrTable').rows, t = trows.length, trow, nextrow,
rownum = document.getElementById('rownum'),
addEvent = (function(){return window.addEventListener? function(el, ev, f){
el.addEventListener(ev, f, false); //modern browsers
}:window.attachEvent? function(el, ev, f){
el.attachEvent('on' + ev, function(e){f.apply(el, [e]);}); //IE 8 and less
}:function(){return;}; //a very old browser (IE 4 or less, or Mozilla, others, before Netscape 6), so let's skip those
})();
rownum.value = rownum.defaultValue; //reset for browsers that remember input values on reload
while (--t > -1) {
trow = trows[t];
trow.className = 'normal';
addEvent(trow, 'click', highlightRow);
}//end while
function highlightRow(gethighlight) { //now dual use - either set or get the highlighted row
gethighlight = gethighlight === true;
var t = trows.length;
while (--t > -1) {
trow = trows[t];
if(gethighlight && trow.className === 'highlighted'){return t;}
else if (!gethighlight){
if(trow !== this) { trow.className = 'normal'; }
else if(this.className === 'normal') { rownum.value = t; }
else { rownum.value = rownum.defaultValue; }
}
}//end while
return gethighlight? null : this.className = this.className === 'highlighted'? 'normal' : 'highlighted';
}//end function
function movehighlight(way, e){
e.preventDefault && e.preventDefault();
e.returnValue = false;
var idx = highlightRow(true); //gets current index or null if none highlighted
if(typeof idx === 'number'){//there was a highlighted row
idx += way; //increment\decrement the index value
if(idx && (nextrow = trows[idx])){ return highlightRow.apply(nextrow); } //index is > 0 and a row exists at that index
else if(idx){ return highlightRow.apply(trows[1]); } //index is out of range high, go to first row
return highlightRow.apply(trows[trows.length - 1]); //index is out of range low, go to last row
}
return highlightRow.apply(trows[way > 0? 1 : trows.length - 1]); //none was highlighted - go to 1st if down arrow, last if up arrow
}//end function
function processkey(e){
switch(e.keyCode){
case 38: {//up arrow
return movehighlight(-1, e)
}
case 40: {//down arrow
return movehighlight(1, e);
}
default: {
return true;
}
}
}//end function
addEvent(document, 'keydown', processkey);
addEvent(window, 'unload', function(){}); //optional, resets the page for browsers that remember the script state on back and forward buttons
}//end function
</script>
</head>
<body>
<div>
Current Row: <input type="text" id="rownum" value="None" readonly>
<table id="mstrTable" cellspacing="0" border="1">
<thead>
<tr>
<th>File Number</th>
<th>Date1</th>
<th>Date2</th>
<th>Status</th>
<th>Num.</th>
</tr>
</thead>
<tbody>
<tr>
<td>KABC</td>
<td>09/12/2002</td>
<td>09/12/2002</td>
<td>Submitted</td>
<td>1</td>
</tr>
<tr>
<td>KCBS</td>
<td>09/11/2002</td>
<td>09/11/2002</td>
<td>Lockdown</td>
<td>2</td>
</tr>
<tr>
<td>WFLA</td>
<td>09/11/2002</td>
<td>09/11/2002</td>
<td>Submitted</td>
<td>3</td>
</tr>
<tr>
<td>WTSP</td>
<td>09/15/2002</td>
<td>09/15/2002</td>
<td>In-Progress</td>
<td>4</td>
</tr>
</tbody>
</table>
</div>
<br><br>
<input type="button" value="delete this row" onclick="delete_row()"/>
</body>
</html>
这似乎有效，一旦行号似乎占了。
function delete_row() {
var r = document.getElementById("rownum").value
document.getElementById("mstrTable").deleteRow(r);
}
答案 0 :(得分：0)
使用此（如果您知道行号）
function delete_row() {
var r = document.getElementById("rownum").value
document.getElementById("mstrTable").deleteRow(r);
}
答案 1 :(得分：0)
这只删除选中的行。无需传递行号。
function delete_row() {
document.querySelector(".highlighted").remove();
}