Use toFixed() function to parse the string to float 2 decimal in JavaScript.
var twoPlacedFloat = parseFloat(yourString).toFixed(2)If you need performance (like in games):
Math.round(number * 100) / 100
It’s about 100 times as fast as parseFloat(number.toFixed(2))
Source: stackoverflow.com
Example string to float 2 decimal in JavaScript
Simple example code parse float with two decimal places. When you use toFixed, it always returns the value as a string. This sometimes complicates the code.
<!doctype html>
<head>
<script>
var str = "100.999";
var res = parseFloat(str).toFixed(2)
console.log(res);
</script>
</head>
<body>
</body>
</html>
Output:
parseFloat 2 decimals as NUMBER
<script>
var str = "100.999";
var res = Math.round(str * 100) / 100
console.log(res)
console.log(typeof(res));
</script>Output: 101
number
Do comment if you have any doubts or suggestions on this JS string to float the topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version