Bootstrap data-toggle="toggle" checked,unchecked by jquery

I'm using bootstrap checkbox with data-toggle="toggle" attribute. I want to set it checked and unchecked with jquery. I tried many ways but it didn't work. Here is my code. <input type="checkbox" data-toggle="toggle" data-size="small" id="checkbox1"> for button click: $("#checkbox").attr('checked',true); But it's working when I remove data-toggle="toggle" attribute. Any help is greatly appreciated! Thanks.