ParseFloat return string instead of number in Javascript

Question

i have a array coming from api like this

x = [0, 12.1, 23.45, 100.23, 13.99, 90, 0, 16.1]

i want each number with decimal point upto 2, like 0.00 or 12.10

what i did is

x = x.toFixed(x);

but this return string values not number, i need all values as numbers. i am not sure how i can get numbers after converting them to decimals.

someone suggest this code i tried but no success

x = +x.toFixed(2);

i tried parseFloat as well after toFixed but it shows in console its a number but its not, its actually a string.

i am trying this in angular2+ application in primeng table

It is not possible. Numbers do not have trailing zeros. That is why it is converted to a string. — epascarello
– epascarello, Commented Dec 13, 2018 at 21:48
Use the numbers as they are, convert them to strings (via toFixed) only when you need to display them. — ibrahim mahrir
– ibrahim mahrir, Commented Dec 13, 2018 at 21:50
what are you trying to achive? I believe that you are in wrong direction — Derviş Kayımbaşıoğlu
– Derviş Kayımbaşıoğlu, Commented Dec 13, 2018 at 21:53
Why do you need the 0's if you're doing math on them? Mathematically, 1.0000000000 == 1. The only time you should need leading 0s or trailing decimal 0s is when you're displaying them, not operating on them; in which case, as @ibrahimmahrir said, make a string copy for display but operate on the original numbers. — IceMetalPunk
– IceMetalPunk, Commented Dec 13, 2018 at 21:53

Derviş Kayımbaşıoğlu · Accepted Answer · 2018-12-13 22:02:50Z

3

you can use pipe on the html side

PS: dont forget to add DecimalPipe inside your declarations

If your need is to use this on ts side then your solution would work

(15).toFixed(2) //15.00

answered Dec 13, 2018 at 21:57

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3 Comments

i think it should be {{x | number:'1.2-2'}}. the number of digits to the right of the decimal should always be 2.

i did tofixed but it return it as a string not number

anyway thanks, display with number is a good idea and it works :)