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@medv/finder
Advanced tools
Readme
The CSS Selector Generator
npm install @medv/finder
import {finder} from '@medv/finder'
document.addEventListener('click', event => {
const selector = finder(event.target)
console.log(selector)
})
An example of a generated selector:
.blog > article:nth-child(3) .add-comment
const selector = finder(event.target, {
root: document.body, // Root of search, defaults to document.body.
idName: (name) => true, // Check if this ID can be used.
className: (name) => true, // Check if this class name can be used.
tagName: (name) => true, // Check if tag name can be used.
attr: (name, value) => false, // Check if attr name can be used.
seedMinLength: 1,
optimizedMinLength: 2,
threshold: 1000,
maxNumberOfTries: 10_000,
timeoutMs: undefined,
})
Minimum length of levels in fining selector. Starts from 1
.
For more robust selectors give this param value around 4-5 depending on depth of
you DOM tree. If finder hits the root
, this param is ignored.
Minimum length for optimising selector. Starts from 2
.
For example selector body > div > div > p
can be optimised to body p
.
Max number of selectors to check before falling into nth-child
usage.
Checking for uniqueness of selector is very costly operation, if you have DOM
tree depth of 5, with 5 classes on each level, that gives you more than 3k
selectors to check. Default 1000
is good enough in most cases.
Max number of tries for the optimization. This is a trade-off between
optimization and efficiency. Default 10_000
is good enough in most cases.
Optional timeout in milliseconds. undefined
(no timeout) by default. If timeoutMs: 500
is provided, an error will be thrown if selector generation takes more than 500ms.
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FAQs
CSS Selector Generator
The npm package @medv/finder receives a total of 67,740 weekly downloads. As such, @medv/finder popularity was classified as popular.
We found that @medv/finder demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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