Question

我有jQuery代码：

$('td').hover(function () {
  var t = $(this),
          index = t.index(); // the position of the TD in the row, so you can find the one below it
  t.addClass('hovered'); // apply hovered class to this TD...
  t.nextAll(':lt(3)').addClass('hovered'); // ...and to the TD next to it...
  t.closest('tr')
   .nextAll(':lt(3)')
   .find('td:eq(' + index + ')')
   .addClass('hovered')
   .nextAll(':lt(3)')
   .addClass('hovered'); // ...and to the 2 below
}, function () {
  // remove the hovered class when no longer hovering
  $(this).closest('table').find('td').removeClass('hovered');
});

JSFiddle DEMO

如何选择4x4细胞？不像演示那样2x4 +2。

Answer 1

$('td').hover(function () {
    var t = $(this),
        index = t.index(); // the position of the TD in the row, so you can find the one below it
    t.addClass('hovered'); // apply hovered class to this TD...
    t.nextAll(':lt(1)').addClass('hovered'); // ...and to the TD next to it...
    t.closest('tr').nextAll(':lt(1)').find('td:eq(' + index + ')').addClass('hovered').nextAll(':lt(1)').addClass('hovered'); // ...and to the 2 below
}, function () {
    // remove the hovered class when no longer hovering
    $(this).closest('table').find('td').removeClass('hovered');
});

我将lt（3）更改为lt（1）。看看这是不是你想要的。

查看结果：http://jsfiddle.net/FXy5J/3/

Answer 2

尝试

$('td').hover(function () {
    var t = $(this),
        index = t.index(); // the position of the TD in the row, so you can find the one below it
    t.addClass('hovered'); // apply hovered class to this TD...
    t.nextAll(':lt(3)').addClass('hovered'); // ...and to the TD next to it...
    t.closest('tr').nextAll(':lt(3)').each(function(i,v){
        $('td:eq(' + index + ')', this).addClass('hovered').nextAll(':lt(3)').addClass('hovered'); // ...and to the 2 below
    })
}, function () {
    // remove the hovered class when no longer hovering
    $(this).closest('table').find('td').removeClass('hovered');
});

演示：Fiddle

更简化的版本

$('td').hover(function () {
    var t = $(this),
        index = t.index(); // the position of the TD in the row, so you can find the one below it

    var trs = t.closest('tr').nextAll(':lt(3)').addBack();
    trs.find('td:eq(' + index + ')').add(trs.find('td:gt(' + (index) + '):lt(3)')).addClass('hovered');
}, function () {
    // remove the hovered class when no longer hovering
    $(this).closest('table').find('td').removeClass('hovered');
});

演示：Fiddle

Answer 3

var selectY = 4, selectX = 4

$('td').hover(function () {    
  var $cell = $(this),
    $table = $cell.parents("table"),
    x = $cell.index(),
    y = $cell.parent().index();

  $table.find("tr:eq("+y+"),tr:gt("+y+"):lt("+(selectY-1)+")")
        .find("tr:eq("+x+"),td:gt("+x+"):lt("+(selectX-1)+")")
    .addClass("hovered");
}, function(){
  $(this).parents("table")
    .find("td")
    .removeClass("hovered");    
});

您也可以使用selectX和Y vars选择您的区域

http://jsfiddle.net/PKahK/2/

*已更新，因为gt似乎不接受-1：/

如何从HTML表中选择更多tr

3 个答案: