You can omit the second argument in substring, substr and slice to get the rest of the string until the end. You can also use charAt(0) or even .charAt() to get the first char instead of a slicing method.
substring
substr
slice
charAt(0)
.charAt()
const capitalize = str => str .toLowerCase() .split(' ') .map(strWord => strWord.charAt().toUpperCase() + strWord.slice(1)) .join(' ')
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You can omit the second argument in
substring,substrandsliceto get the rest of the string until the end.You can also use
charAt(0)or even.charAt()to get the first char instead of a slicing method.