MongoDB query to push entry from one collection into another - mongodb

Question

Collection 1:
nodeDB : [{
"VARIANTS": [
{"NAME" : Brand},
{"NAME" : Price},
{"NAME" : Colour},
{"NAME" : Size}
]
}]
A form is generated from VARIANTS.The values of this form are to be pushed into New DB called ProductDB
Collection2:
ProductDB [{
{"Brand" : Lee},
{"Price" : 100},
{"Color" : Red},
{"Size" : M}
}]
The values are taken from the user interface.
EDIT
JS File:
Template.dpVar.variant=nodeDB.find({}, { "VARIENTS.NAME": 1, _id : 0 } );
// Wait for a 'submit'
Template.inputDB.events = {
'submit' : function (e, tmpl) {
e.preventDefault();
var NAME= {
NAME: tmpl.find("#NAME").value
};
nodeDB.insert(template_name);
}
}

Answer 1

It seems you are using meteor JS.
You need to perform action onclick of submit button,
<table id="TemplateCreateNewStructure" class=" table table-withborder table-type1">
</table>
Then call ajax and display your data in table then click on submit button, insert your record in new collection like tis way
function createPreviewFormForTemplate(opt){
if VARIANTS.name == 'Brand'
tr = tr='<tr><td>'+VARIANTS.name+'</td><td <input id="dtBoxIN" class="form-control" type="text" placeholder="ENter Brand"/> <div id="dtBox"></div></td></tr>';
$("#TemplateCreateNewStructure").append(tr);
Once you done with all condition then save tables data into a object and that object you need to insert into another collection
you can get your value by using trim method
$("#submit").click(function(){
data = {
"brand": $("#dtBoxIN").val().trim(),
};
you need to send this data object to your backend code
at the backend code you need to run this command
db.collection.insert(data)