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js check if string is a valid selector

Tiago F2 answered on October 13, 2022 Popularity 1/10 Helpfulness 9/10

answer js check if string is a valid selector

js check if string is a valid selector

Comment

const isSelectorValid = ((dummyElement) =>
  (selector) => {
    try { dummyElement.querySelector(selector) } catch { return false }
    return true
  })(document.createDocumentFragment())
  
console.assert(isSelectorValid('p > > > a') === false)
console.assert(isSelectorValid('p > a') === true)
console.log('Test passed')

Popularity 1/10 Helpfulness 9/10 Language javascript

Source: stackoverflow.com

Tags: javascript selector

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