Convert String to Float in Javascript error

Question

Please see below code,i getting wrong value.

eg;

 var FirstValue=0.00;
 var secondvalue=parseFloat("22.88",10).toFixed(2);    
 var thirdvalue=(FirstValue) +   (secondvalue);

am getting value like"22.8822.88"

Please help me to solve.Its not convert to numeric .

Is this actually your code? I don't get the correct result but I don't get what you're seeing. Also you have an extra closing ) after toFixed. jsfiddle.net/DJSRV/3 — Andrew Whitaker
– Andrew Whitaker, Commented May 24, 2012 at 14:12
Thanks..its not a actual code..yes there there is extra closing. i removed it. — Justinonday
– Justinonday, Commented May 24, 2012 at 14:15

alexey28 · Accepted Answer · 2012-05-24 14:13:44Z

4

toFixed convert you float value to string back. So when you adding two values you will get not number addition but string concatenation:

2.0 + 2.0 = 4.0 // number
"2.0" + "2.0" = "2.02.0" // string

Remove to fixed after conversion. Than add two values and than do to fixed:

var FirstValue=0.00;
var secondvalue=parseFloat("22.88",10);    
var thirdvalue= ( (FirstValue) +   (secondvalue) ).toFixed(2);

answered May 24, 2012 at 14:13

alexey28

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3 Comments

Justinonday Over a year ago

ok.Its fine for floating .but my secondvalue may be interger like "10",am using this inside loop.

Justinonday Over a year ago

then its giving error like "Microsoft JScript runtime error: Object doesn't support this property or method"

alexey28 Over a year ago

I test it on IE6 and FireFox - it works for me. Copy past this code - and it's work. Maybe there is other problem in your code?

Dennis · Accepted Answer · 2012-07-17 02:48:29Z

0

try this:

 var FirstValue=0.00;
 var secondvalue=parseFloat("22.88");
 secondvalue = parseFloat(secondvalue.toFixed(2));   
 var thirdvalue=(FirstValue) +   (secondvalue);

toFixed returns a string, not a number so it needs to be converted again.

edited Jul 17, 2012 at 2:48

Dennis

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answered May 24, 2012 at 14:14

Kerem

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