js check if string is integer
Number.isInteger(value)
//returns a Booleanif (typeof myVar === 'string'){
//I am indeed a string
}isNaN(num) // returns true if the variable does NOT contain a valid number
isNaN(123) // false
isNaN('123') // false
isNaN('1e10000') // false (This translates to Infinity, which is a number)
isNaN('foo') // true
isNaN('10px') // truefunction isInt(str) {
return !isNaN(str) && Number.isInteger(parseFloat(str));
}
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