handlebars-logic.js contains a number of Handlebars helpers that
allow performing boolean logic, comparisons and arithmetic operations
within Handlebars templates.
Operators use Lisp-style operator syntax, for example:
a+b+c equals {{sum a b c}}}
a is {{#if (gt a 10)}} greater than {{else}} less or equal to {{/if}} ten.
{{#if (and (a lt 10) (b lt 10))}} Both a and b are less than ten. {{/if}}
Boolean operators: and or (any number of arguments) not (one argument)
Comparison operators: eq ne lt gt lte gte (two arguments, numbers or strings)
Arithmetic operators: sum sub mul div (any number of arguments) mod (two arguments)
See example.html for more complete examples.
This was written by Sampo Juustila and inspired by the Stack Overflow answer by kevlened.
Licensed under MIT license.