js解决列表中按钮重复点击重复提交的问题

clickFunc(){

var _isPostting = $("#alreadyMentionedReceivables"+orderNo).attr('data-ispostting');
if(_isPostting == 'true'){
return;
}
$("#alreadyMentionedReceivables"+orderNo).attr('data-ispostting','true');

$.ajax({...})

}