How Can I Incorporate Logical Operators into Handlebars' {{#if}} Conditional?

Incorporating Logical Operators into Handlebar's {{#if}} Conditional

Handlebars.js provides a straightforward {{#if}} conditional operator, but what if you need to incorporate logical operators?

Custom Helper with Handlebars.registerHelper()

Fortunately, you can define a custom helper function with Handlebars.registerHelper(). This allows you to extend Handlebar's built-in capabilities:

Handlebars.registerHelper('ifCond', function(v1, v2, options) {
  if (v1 === v2) {
    return options.fn(this);
  }
  return options.inverse(this);
});

Usage in the Template

Once registered, you can use the custom helper in your templates:

{{#ifCond v1 v2}}
  {{v1}} is equal to {{v2}}
{{else}}
  {{v1}} is not equal to {{v2}}
{{/ifCond}}

With this helper, you can evaluate logical expressions within Handlebars.js's {{#if}} conditional. While it may feel like a workaround, it allows for greater flexibility in your templates.

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