contains​

Block helper that renders the block if collection has the given value, using strict equality (===) for comparison, otherwise the inverse block is rendered (if specified). If a startIndex is specified and is negative, it is used as the offset from the end of the collection.

Params​

• collection {Array|Object|String}: The collection to iterate over.
• value {any}: The value to check for.
• [startIndex=0] {Number}: Optionally define the starting index.
• options {Object}: Handlebars provided options object.

Example​

{{ assign 'array' (JSONparse '["a", "b", "c", "d"]') }}
{{#contains array "d"}}
  This will be rendered.
{{else}}
  This will not be rendered.
{{/contains}}