javascript - how do i query a field in mongodb with a boolean value and return a boolean whether its true or false -

check simple collection:

{_id: "01",   name: "jimmy",   candrive: false } 

what want once document found, manipulate dom , show <div class="driving-tutorial> if field candrive value false , hide if value true

like in meteor:

template.profile.rendered = function() {     if (<query>,<field> == true){         $('.driving-tutorial').hide();     else {         $('.driving-tutorial').show(); } 

you implement logic findone() method finds first document matches selector/query object in arguments. can call findone() mongo selector, object specifies required set of attributes of desired document match document. example, selector

var doc = model.findone({ candrive: false }); 

will match document

{     _id: "01",     name: "jimmy",     candrive: false  } 

you can use above logic in template function check existence of document , field, bearing in mind findone() return null if fails find matching document, happens if document hasn't been loaded yet or has been removed collection:

template.profile.rendered = function() {     var doc = model.findone({ candrive: false });     if (doc && !doc.candrive){         $('.driving-tutorial').show();     else {         $('.driving-tutorial').hide();      } } 

you can use jquery toggle() method's second version accepts boolean parameter. if parameter true, matched elements shown; if false, elements hidden:

template.profile.rendered = function() {     var doc = model.findone({ candrive: false }),         candrive = (doc && !doc.candrive);     $('.driving-tutorial').toggle(candrive); }