javascript check if number
//Updated dec 2020
// The first 2 Variations return a Boolean
// They just work the opposite way around
// IsInteger
if (Number.isInteger(val)) {
// It is indeed a number
}
// isNaN (is not a number)
if (isNaN(val)) {
// It is not a number
}
// Another option is typeof which return a string
if (typeof(val) === 'number') {
// Guess what, it's a bloody number!
}js check if string is int
function isNumeric(str) {
// Check if input is string
if (typeof str != "string")
return false
// Use type coercion to parse the _entirety_ of the string
// (`parseFloat` alone does not do this).
// Also ensure that the strings whitespaces fail
return !isNaN(str) &&
!isNaN(parseFloat(str))
}Copyright © 2021 Codeinu
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