问题
I have a.filter function, which works and marks all parents of <td> that contain an input field in red.
However, I need the exact opposite. So return all fields that don't contain <input.
I tried if ($(this).html().indexOf('<input') == -1) { but that just marks all rows somehow.
My jQuery:
$(document).ready(function () {
$("#ListView1_itemPlaceholderContainer table table table td").filter(function (index) {
if ($(this).html().indexOf('<input') > 0) {
return true;
}
}).closest('div').css('background-color', 'red');
});
Here's my HTML
<div id="ListView1_itemPlaceholderContainer" style=
"font-family: Verdana, Arial, Helvetica, sans-serif;">
<div style="background-color: #FFFFFF; color: #333333;">
<table style="width: 100%;">
<tbody>
<tr>
<td style="width: 71px"><img id="ListView1_userInfo1_0_ImageUser_0" src=
"http://pbs.twimg.com/profile_images/13/6GA5kEu6_normal.png" style=
"height:65px;width:65px;" /></td>
<td style="vertical-align: top">
<table style="width: 100%;">
<tbody>
<tr>
<td></td>
</tr>
<tr>
<td>
<table style="width: 100%;">
<tbody>
<tr>
<td><img id="ListView1_userInfo1_0_Imagebg_0" src=
"https://pbs.twimg.com/profile_banners/13/1402427948" style=
"height:64px;width:251px;" /><br />
<span id="ListView1_userInfo1_0_LabelName_0">dfgdfg</span>
@<span id=
"ListView1_userInfo1_0_LabelUserName_0">dfgdfg</span></td>
<td style="text-align: right"></td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td><span style="font-size:10px">Follower-<span id=
"ListView1_userInfo1_0_LabelFollower_0">4578</span> ,
Following-<span id=
"ListView1_userInfo1_0_LabelFollowing_0">1654</span></span></td>
</tr>
<tr>
<td><span id="ListView1_userInfo1_0_LabelAbout_0"></span></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table><br />
</div>
<div style="background-color: #EEEEEE;color: #333333;">
<table style="width: 100%;">
<tbody>
<tr>
<td style="width: 71px"><img id="ListView1_userInfo_1_ImageUser_1" src=
"http://pbs.twimg.com/profile_images/12/ECWtACTn_normal.jpeg" style=
"height:65px;width:65px;" /></td>
<td style="vertical-align: top">
<table style="width: 100%;">
<tbody>
<tr>
<td></td>
</tr>
<tr>
<td>
<table style="width: 100%;">
<tbody>
<tr>
<td><img id="ListView1_userInfo_1_Imagebg_1" src=
"http://pbs.twimg.com/profile_background_images/37/pTBlAXSm.jpeg"
style="height:64px;width:251px;" /><br />
<span id="ListView1_userInfo_1_LabelName_1">dfgdfgd</span>
@<span id=
"ListView1_userInfo_1_LabelUserName_1">dfgdfgdf</span></td>
<td style="text-align: right"><input type="submit" name=
"ListView1$ctrl1$userInfo$ButtonFollow" value="Follow" id=
"ListView1_userInfo_1_ButtonFollow_1" style=
"height:100px;width:100px;" /></td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td><span style="font-size:10px">Follower-<span id=
"ListView1_userInfo_1_LabelFollower_1">4622</span> ,
Following-<span id=
"ListView1_userInfo_1_LabelFollowing_1">4007</span></span></td>
</tr>
<tr>
<td><span id="ListView1_userInfo_1_LabelAbout_1"></span></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table><br />
</div>
</div>
I also check out this post jQuery: use filter(), but work with both results as suggested by commenter.
And tried this:
<script type="text/javascript">
$(document).ready(function () {
$.fn.invert = function () {
return this.end().not(this);
};
$("#ListView1_itemPlaceholderContainer table table table td").filter(function (index) {
if ($(this).html().indexOf('<input') > 0) {
return true;
}
}).invert().closest('div').css('background-color', 'red');
});
</script>
But that also makes all rows red.
回答1:
You can use .not() along with :has()
$(document).ready(function () {
$("#ListView1_itemPlaceholderContainer table table table td").not(':has(input)').closest('div').css('background-color', 'red');
});
回答2:
I think you should accept Arun's answer. The problem is that indexOf returns the index of the first match char http://www.w3schools.com/jsref/jsref_indexof.asp, and in your case it will be 0, so the condition > 0 won't apply. Also for what concerns == -1 coloring all the rows, better apply your function to tr instead of td
You can change your function to
$(document).ready(function () {
$("#ListView1_itemPlaceholderContainer table table table tr").filter(function (index) {
if ($(this).html().indexOf('<input') > -1) {
return true;
}
}).closest('div').css('background-color', 'red');
});
to mark the rows with input to red, or invert the condition to do the opposite. Or better yet use a different selector as suggested by Arun.
Fiddle for marking red the row with input http://jsfiddle.net/q9othg59/2/ and fiddle for the opposite http://jsfiddle.net/q9othg59/4/
来源：https://stackoverflow.com/questions/27308761/get-opposite-inverse-of-jquery-filter-results