For do this you can use the package : sacha:spin
You need :
meteor add sacha:spin
And add in your layout :
{{> spinner}}
Example :
js file :
var process = new ReactiveVar("");
Template.PaymentResult.helpers({ 'isProcessing':function(){ if ( process.get() == true){ return true; } else { return false; } } });
html file
{{#if isProcessing}} Loading ... {{> spinner}} {{else}} { .... } {{/if}}
You can look like is:
+ More : https://atmospherejs.com/sacha/spin