通过js添加的元素点击事件无法触发
var blk_have ='<div class="sw-off"></div>';
$('#blk').prepend(blk_have);
$(document).on('click', '.sw-off', function(){
$(this).toggleClass('sw-on');
});
var blk_have ='<div class="sw-off"></div>';
$('#blk').prepend(blk_have);
$(document).on('click', '.sw-off', function(){
$(this).toggleClass('sw-on');
});