Why does SerializeJSON return an int with .0?

The following code:

<cfscript>
struct = StructNew();
struct.x = 1;
struct.y = 2;
</cfscript>

<cfoutput>#SerializeJSON(struct)#</cfoutput>

Results in the following output:

{"Y":2.0,"X":1.0}

So my question is wh开发者_StackOverflowy does the .0 get added? and is there some way to remove it?

The best thing I found to remove the .0 is a cast, using the Coldfusion function javaCast :

struct.x = javaCast("int",1);

Adding a trailing .0 to numbers was a known "feature" in the way serializeJson was implemented in release 8. It is fixed/changed in CF 9.01 on my home XP machine your code returns

{"Y":"2","X":"1"}

i assume the implementation is not the best :-/ try to checkout this: http://craigkaminsky.blogspot.com/2008/11/coldfusion-serializejson-gotcha.html

Two ways to remove it:

NumberFormat(x, "9")

<cfset x = 1.0> <cfset y = x * 1> <!--- will convert to an int --->