我可以在jQuery中选择多个对象变量吗?

var tgtCol = $('td[aria-describedby=tblGrid_Subject]');
var tgtHdr = $('#tblGrid_Subject');
$(tgtHdr).add(tgtCol).attr('colSpan', '3');

这也会起作用:

var stuff = $('td[aria-describedby=tblGrid_Subject], #tblGrid_Subject');
stuff.attr('colSpan', '3');

$('td[aria-describedby=tblGrid_Subject], #tblGrid_Subject').attr('colSpan', '3');

由于前两行已经返回jQuery对象,您可以这样做:

tgtHdr.attr('colSpan', '3');
tgtCol.attr('colSpan', '3');

你可以使用 multiple selector 最初:

$('td[aria-describedby=tblGrid_Subject], #tblGrid_Subject').attr('colSpan', '3');

如果是两个选择器,则可以使用“merge”,但如果多于两个,则应使用“each”

// using merge:
$.merge(selector1, selector2) // the rest

// using each:
$([selector1, selector2, selector3, .....etc]).each(function(){
    // your code here
});