check if number is single digit javascript
function hasOneDigit(val) {
return String(Math.abs(val)).charAt(0) == val;
}
console.log(hasOneDigit(1)); // true
console.log(hasOneDigit(12)); // falsecheck if number is single digit javascript
function hasOneDigit(val) {
return String(Math.abs(val)).charAt(0) == val;
}
console.log(hasOneDigit(1)); // true
console.log(hasOneDigit(12)); // falsehow to know if a number has a decimal number js
function hasDecimal (num) {
return !!(num % 1);
}
hasDecimal(2) // true
hasDecimal(2.345) // falseCopyright © 2021 Codeinu
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