Tips for displaying a specific amount of significant digits in a numerical output

Below is the JSON data that needs to be displayed on a web browser:

{
  "testDoubleArr": [1, 2.0, 3.45],
  "testStr3": "SHA",
  "testDouble1": 12.56,
  "testDouble2": 1.0,
  "testStr1": "OMG"
}

When displayed on the browser, it appears in the following format:

{
  "testDoubleArr": [1, 2, 3.45],
  "testStr3": "SHA",
  "testDouble1": 12.56,
  "testDouble2": 1,
  "testStr1": "OMG"
}

The zeros after the decimal point have been removed if they are the only digits present after the decimal point. However, they need to be shown without conversion into a string.

Is there a way to specify the number of significant digits for JavaScript numbers?

javascriptjson

Answer №1

It is possible to specify the desired number of significant digits in a decimal value.

let number = 3.14159;
number.toFixed(2); // This will give us "3.14"

Keep in mind that any additional significant digits beyond the specified amount will be rounded:

let anotherNumber = 2.718281828;
anotherNumber.toFixed(4) // This will result in "2.7183"

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