Answers for "check variable is number or string javascript"

javascript is variable number or string

if (typeof myVar === 'string'){
    //I am indeed a string
}

js check if a string is a number

function isNumeric(str) {
  if (typeof str != "string") return false // we only process strings!  
  return !isNaN(str) && // use type coercion to parse the _entirety_ of the string (`parseFloat` alone does not do this)...
         !isNaN(parseFloat(str)) // ...and ensure strings of whitespace fail
}