Convert JavaScript string variable to decimal / monetary

Question

How can we convert a JavaScript string variable to decimal?

Is there such a function as

parseInt(document.getElementById(amtid4).innerHTML) 

Answer 1

Yes - parseFloat .

 parseFloat(document.getElementById(amtid4).innerHTML); 

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To format numbers, use toFixed :

 var num = parseFloat(document.getElementById(amtid4).innerHTML).toFixed(2); 

num now a string with a number formatted with two decimal places.

Answer 2

You can also use the constructor / function Number (there is no need for a radius and can be used for both integers and float):

 Number('09'); /=> 9 Number('09.0987'); /=> 9.0987 

Answer 3

It works:

 var num = parseFloat(document.getElementById(amtid4).innerHTML, 10).toFixed(2); 

Answer 4

 var formatter = new Intl.NumberFormat("ru", { style: "currency", currency: "GBP" }); alert( formatter.format(1234.5) ); // 1 234,5 £ 

https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat

Answer 5

An easy short way would be to use + x. It keeps the sign unchanged, as well as decimal numbers. Another alternative is to use parseFloat (x). The difference between parseFloat (x) and + x for the empty string + x returns 0 when parseFloat (x) returns NaN.