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hbl-comparison

v0.1.0

Published

A helper for Handlebars that adds comparison functions.

Downloads

1

Readme

hbl-comparison

A helper for Handlebars that adds comparison functions. Meant to supercede helpers/handlebars-helpers' comparison helpers.

Usage

const Handlebars = require('handlebars');
require('hbl-comparison').default();

const tpl = Handlebars.compile('{{#lt 2 4}}Tiny number.{{else}}Big number.{{/lt}}');
console.log(tpl()); // result : 'Tiny number.' 

Package documentation

{{#and a b }}

If both a and b are true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

<!-- great: true, magnifice: true -->
{{#and great magnifice }}
A
{{else}}
B
{{/and}}

Result : A

{{#compare a op b }}

Compares a and b with an operator. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

The operator must be a string (enclose in strings). The conventional operators are supported : >, >=, ==, ===, !=, !==, <=, <. typeof is also supported, where a is checked to be the typeof b.

Usage :

{{#compare 2 != 2}}
A
{{else}}
B
{{/compare}}

Result : B

{{#contains array value }}

Checks if an array contains a value. If it does, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#contains ['a','b','c'] "d" }}
A
{{else}}
B
{{/contains}}

Result : B

{{ default value defaultValue }}

Checks if a value is undefined. If it is, the defaultValue is rendered — otherwise, the value is.

Usage : {{ default apple "Whoops, I forgot to define something" }}

Result : Whoops, I forgot to define something

{{#eq a b }}

Checks if a === b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#eq 2 2}}
A
{{else}}
B
{{/eq}}

Result : A

{{#gt a b }}

Checks if a > b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#gt 2 2}}
A
{{else}}
B
{{/gt}}

Result : B

{{#gte a b }}

Checks if a >= b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#gte 2 2}}
A
{{else}}
B
{{/gte}}

Result : A

{{#has "a b" }}

Checks if an array has a pattern. If it does, the block is rendered. Otherwise, the inverse is rendered.

Usage :

<!-- context: 'CCC' -->
{{#has context "C"}}
A
{{else}}
B
{{/has}}

Result : A

{{#ifEven num }}

Checks if num is even. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#ifEven 2 }}
A
{{else}}
B
{{/ifEven}}

Result : A

{{#ifNth a b }}

Checks if a is divisible by b evenly (no remainder). If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#ifNth 4 2 }}
A
{{else}}
B
{{/ifNth}}

Result : A

{{#ifOdd num }}

Checks if num is odd. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#ifOdd 2 }}
A
{{else}}
B
{{/ifOdd}}

Result : B

{{#is a b }}

Checks if a == b. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#is 2 3 }}
A
{{else}}
B
{{/is}}

Result : B

{{ isFalsey val }}

Checks if val is false. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage : {{ isFalsey false }}

Result : true

{{#isnt a b }}

Checks if a != b. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#isnt 2 3 }}
A
{{else}}
B
{{/isnt}}

Result : A

{{ isTruthy val }}

Checks if val is true. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage : {{ isTruthy false }}

Result : false

{{#lt a b }}

Checks if a < b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#lt 2 2}}
A
{{else}}
B
{{/lt}}

Result : B

{{#lte a b }}

Checks if a <= b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#lte 2 2}}
A
{{else}}
B
{{/lte}}

Result : A

{{#neither a b }}

Checks if a and b are false. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#neither false true }}
A
{{else}}
B
{{/neither}}

Result : B

{{ not val }}

Checks if val is false. If it is, the block is rendered. Otherwise, the inverse is rendered.

Usage : {{ not false }}

Result : true

{{#or a b }}

If either a or b are true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

<!-- great: true -->
{{#or great false }}
A
{{else}}
B
{{/or}}

Result : A

{{#unlessEq a b }}

Checks if a !== b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#unlessEq 2 2}}
A
{{else}}
B
{{/unlessEq}}

Result : B

{{#unlessGt a b }}

Checks if a <= b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#unlessGt 2 2}}
A
{{else}}
B
{{/unlessEq}}

Result : B

{{#unlessGteq a b }}

Checks if a < b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#unlessEq 2 2}}
A
{{else}}
B
{{/unlessEq}}

Result : A

{{#unlessLt a b }}

Checks if a >= b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#unlessEq 2 2}}
A
{{else}}
B
{{/unlessEq}}

Result : B

{{#unlessLteq a b }}

Checks if a > b. If the result is true, the block is rendered. Otherwise, the inverse is rendered.

Usage :

{{#unlessEq 2 2}}
A
{{else}}
B
{{/unlessEq}}

Result : A

Acknowledgements

This package is licensed under the 3-Clause BSD licence. A copy of it can be found in the LICENSE file in the root of the source repository and in the root of the package directory.