JavaScript Truncate Decimal без округления
// truncate function
// in this example the default value is 2
function truncate(number, index = 2) {
// cutting the number
return +number.toString().slice(0, (number.toString().indexOf(".")) + (index + 1));
}
// example
console.log(truncate(1234.56789, 3)); // 1234.567
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