Alternate table row color even if row is removed

问题

I want different colors for alternate table rows even when i delete a row in middle.

HTML

<table border="1">
  <tr><td>Row 1</td><td><a class="sam" href="#">Delete</a></td></tr>
  <tr><td>Row 2</td><td><a class="sams" href="#">Delete</a></td></tr>
  <tr><td>Row 3</td><td><a class="sam" href="#">Delete</a></td></tr>
  <tr><td>Row 4</td><td><a class="sams" href="#">Delete</a></td></tr>
  <tr><td>Row 5</td><td><a class="sam" href="#">Delete</a></td></tr>
</table>

Jquery

$(function(){
    update_rows();
    $("a").click(function(){$(this).parent().parent().remove();update_rows();});
});
function update_rows()
{
    $("tr:even").css("background-color", "#aaa");
    $("tr:odd").css("background-color", "#eee");
}

css

.sam
{
background-color:#FF00FF;
}
.sams
{
background-color:#0000FF;
}

the above code change the row color but not the cell which has link. Please help me to solve the problem

Demo

回答1:

You need to change the class as well

function update_rows() {
    $("tr:even").css("background-color", "#aaa").find('a').removeClass('sam').addClass('sams');
    $("tr:odd").css("background-color", "#eee").find('a').removeClass('sams').addClass('sam');
}

Demo: Fiddle

Use :nth-child if want to support only modern browsers - Demo: Fiddle

tr:nth-child(odd) a {
    background-color:#FF00FF;
}
tr:nth-child(even) a {
    background-color:#0000FF;
}
tr:nth-child(odd) {
    background-color:#aaa;
}
tr:nth-child(even) {
    background-color:#eee;
}

then

$(function () {
    $("a").click(function () {
        $(this).closest('tr').remove();
    });
});

Also note: use $(this).closest('tr').remove() instead of $(this).parent().parent().remove()

回答2:

Try:

  <style>
     tr:nth-of-type(even) {
        background-color:#e3e3e3;
     }

     td:nth-of-type(odd) {
        color:#d04242;
     }
  </style>

回答3:

Use CSS3 for the styling:

<table id="whatever">
  <tr><td>Row 1</td><td><a href="#">Delete</a></td></tr>
  <tr><td>Row 2</td><td><a href="#">Delete</a></td></tr>
  <tr><td>Row 3</td><td><a href="#">Delete</a></td></tr>
  <tr><td>Row 4</td><td><a href="#">Delete</a></td></tr>
  <tr><td>Row 5</td><td><a href="#">Delete</a></td></tr>
</table>
<style>
#whatever tr {
    background-color: #AAA;
}
#whatever tr a {
    background-color:#F0F;
}
#whatever tr:nth-child(odd) {
    background-color: #EEE;
}
#whatever tr:nth-child(odd) a {
    background-color:#00F;
}
</style>
<script>
$("#whatever a").click(function(){
    $(this).closest("tr").remove();
});
</script>

Now no manual updating, neither for the link classes nor the row backgrounds is needed. See updated demo.

回答4:

works perfectly with your tr. the link color doesent change because youre not targeting it with jQuery

回答5:

I have updated the fiddle You need the update the class sam and sams

      $("tr:even td a").removeClass("sam").removeClass("sams").addClass("sam");
      $("tr:odd td a").removeClass("sam").removeClass("sams").addClass("sams");

Check on fiddle

来源：https://stackoverflow.com/questions/20995526/alternate-table-row-color-even-if-row-is-removed

标签

javascript

jquery

tablerow