Blaze is Meteor’s critical front-end component, or we can say handlebars-compatible templating engine specially for Meteor. Blaze fulfills purposes of other front end frameworks like angular.js,ember.js etc. In Blaze we can render HTML reactively, meaning that it will update automatically to track changes in the data used to generate it.
How Blaze Works
Blaze uses a templating language called Spacebars, inspired by Handlebars. It has some similar spirit and syntax of Handlebars , but it has been modified to produce reactive Blaze templates when compiled.
It can be explained using an example