Check String If its a number
When checking string if its a number, there are a lot of ways you can check a string if its a number. You can use regex, isNaN() function, or a plus operator, or parseInt. But the best function that we can use is a function called Number().
#javascript
#string
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jenuel.dev
Mar. 08, 2023. 2:05 PM
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When checking string if its a number, there are a lot of ways you can check a string if its a number. You can use regex, isNaN()
function, or a plus operator, or parseInt.
But the best function that we can use is a function called Number()
.
The Number()
function converts the argument to a number representing the object’s value. If it fails to convert the value to a number
, it returns NaN
.
We can use it with strings also to check whether a given string is a number or not.
console.log(Number('195')) // 195
console.log(Number('boo')) // Nan