如何找到元素的id等于var值？

Question

如何找到元素的id等于变量值？
$（'。el'[id =“var”]）不起作用..

$('.a').hover(function(){
    var current_id = $(this).attr('id'); // console.log(current_id);
    $('.b[id="current_id"]').css({'font-size':'22px'}); // not work
    // console.log($('.b')); get[<div class="b" id="0">0</div> , <div class="b" id="1">1</div> , <div class="b" id="2">2</div>]
}, function(){

});

HTML

<div class="a" id="0">0</div>

<div class="b" id="0">0</div>
<div class="b" id="1">1</div>
<div class="b" id="2">2</div>
...

Answer 1

试试这个

$('.a').hover(function(){
var current_id = $(this).attr('id'); 
$('.b[id="'+current_id+'"]').css({'font-size':'22px'}); 
}, function(){

});

See Demo