javascript check if string is number
if (typeof myVar === 'string'){
//I am indeed a string
}javascript check if string is number
if (typeof myVar === 'string'){
//I am indeed a string
}check if a string contains digits js
function hasNumber(myString) {
return /\d/.test(myString);
}js check if string is number
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') // truejs string have number js
var hasNumber = /\d/;
hasNumber.test("ABC33SDF"); //true
hasNumber.test("ABCSDF"); //falseCopyright © 2021 Codeinu
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