Use Math floor and some additional arithmetics to format number 2 decimals without rounding in JavaScript. Another way is to convert the number into a string, match the number up to the second decimal place and turn it back into a number.
Math.floor(15.7784514000 * 100) / 100
Or
Number(15.7784514000.toString().match(/^\d+(?:\.\d{0,2})?/))Example format number 2 decimals without rounding in JavaScript
Simple example code using math floor.
<!DOCTYPE html>
<body>
<script>
var numb = 123.239454;
var res = Math.floor(numb * 100) / 100
console.log(res)
</script>
</body>
</html>Output:
More example
var num1 = Math.floor(15.7784514000 * 100) / 100;
console.log(num1);
var num2 = Number(15.7784514000.toString().match(/^\d+(?:\.\d{0,2})?/));
console.log(num2)
console.log(num2.toFixed(2))Source: stackoverflow.com
Do comment if you have any doubts or suggestions on this JS format code.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version