TypeScript | toPrecision() Function
Last Updated :
11 Jun, 2020
The toPrecision() method in TypeScript is used to return the string representation in exponential or fixed-point to the specified precision.
Syntax:
number.toPrecision( [ precision ] )
Parameter: It represents an integer value specifying the number of significant digits.
Return Value: The toPrecision() method in TypeScript returns a string representing a Number in fixed-point or exponential notation round to precision significant digits.
Below examples illustrate the working of toPrecision() function in TypeScript:
Example 1:
<script>
var num = new Number(6.218956);
console.log(num.toPrecision());
console.log(num.toPrecision(4));
console.log(num.toPrecision(3));
</script>
|
Output:
6.218956
6.2189
6.21
Example 2:
<script>
let myNumber: number = 32.5779;
console.log( "Number Method: toPrecision()" );
console.log(myNumber.toPrecision(1));
console.log(myNumber.toPrecision(3));
</script>
|
Output:
Number Method: toPrecision()
3e+1
32.6
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