This is a simple helper to extract values from a string based on a pattern.
extractValues("/2012/08/12/test.html", "/{year}/{month}/{day}/{title}.html")
>> { "year": "2012", "month": "08", "day": "12", "title": "test" }
extractValues("John Doe <john@example.com> (http://example.com)", "{name} <{email}> ({url})")
>> {"name": "John Doe", "email": "john@example.com", "url": "http://example.com" }
extractValues("from 4th October to 10th October", "from `from` to `to`", { whitespace: 1, delimiters: ["`", "`"] })
>> {"from": "4th October", "to": "10th October" }
extractValues("Convert 1500 Grams to Kilograms", "convert {quantity} {from_unit} to {to_unit}", { lowercase: true })
>> {"quantity": "1500", "from_unit": "grams", "to_unit": "kilograms" }]- Install as a NPM package
npm install extract-values
- Then
requirein your project.
var extractValues = require("extract-values");- For client-side use, simply copy and paste the function (
extract_values.js) in to your source.
whitespace - normalizes the whitespace in the input string, so it can be aligned with the given pattern. You can define the number of continous whitespaces to contain in the string. Making it zero (0) will remove all whitespaces.
lowercase - coverts the input string to lowercase before matching.
delimiters - If specify the delimiters used in the pattern to define the values. Default delimiters are { and }.