The whereBetween()function is used to filter an input within a given range. In JavaScript, the array is first converted to a collection and then the function is applied to the collection.
Syntax:
data.whereBetween(key, [range]);
Parameters: This function accepts two parameter as mentioned above and described below:
- Key: This parameter holds the key name that define the value of that key.
- Range: The specified range
Return Value: Returns the filtered collection within the range.
Below examples illustrate the whereBetween()function in collect.js:
Example 1: Here in this example, we take a collection and then using the whereBetween() method we specify a key and the value range, to check the value and return the value lie in the range.
Javascript
// It is used to import collect.js library const collect = require('collect.js'); const input= collect([ { fruits: 'Apple', price: 200 }, { fruits: 'Banana', price: 80 }, { fruits: 'Papaya', price: 150 }, { fruits: 'Grapes', price: 30 }, { fruits: 'Cherry', price: 100 }, ]); const output = input.whereBetween('price', [100, 200]); console.log(output.all()); |
Output:
[ { fruits: 'Apple', price: 200 },
{ fruits: 'Papaya', price: 150 },
{ fruits: 'Cherry', price: 100 }]
Example 2:
Javascript
// It is used to import collect.js library const collect = require('collect.js'); const input= collect([ { quantity: 'Flour', price: 150 }, { quantity: 'Rice', price: 100 }, { quantity: 'Vegetables', price: 80 }, { quantity: 'Fruits', price: 90 }, { quantity: 'Pulses', price: 200 }, ]); const output = input.whereBetween('price', [90, 150]); console.log(output.all()); |
Output:
[ { quantity: 'Flour', price: 150 },
{ quantity: 'Rice', price: 100 },
{ quantity: 'Fruits', price: 90 } ]
Reference: https://collect.js.org/api/whereBetween.html
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