How to write If/else statement?

Question

x = 1;    
if(x = 10) {x = 1;} 
else {x = x + 1;}
alert (x);

The result is always 1, instead of 1,2,3...

Denys Séguret · Accepted Answer · 2012-12-05 08:48:51Z

9

Replace

if(x = 10) {x = 1;}

with

if(x == 10) {x = 1;}

Because x=10 returns 10, which in a test evaluates as true, and thus the code {x = 1;} is executed.

From the MDN about if...else :

Any value that is not undefined, null, 0, NaN, or the empty string (""), and any object, including a Boolean object whose value is false, evaluates to true when passed to a conditional statement

answered Dec 5, 2012 at 8:48

Denys Séguret

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Comments

Stefan · Accepted Answer · 2012-12-05 08:49:00Z

4

x = 1;    
if(x

==

10) {x = 1;} 
    else {x = x + 1;}
    alert (x);

answered Dec 5, 2012 at 8:49

Stefan

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Comments

Sridhar Narasimhan · Accepted Answer · 2012-12-05 08:49:20Z

4

if condition should be checked like below

x=1;
if(x == 10)
{x = 1;}
else
{x = x+ 1;}
 alert(x)

Thanks

answered Dec 5, 2012 at 8:49

Sridhar Narasimhan

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Comments

pbibergal · Accepted Answer · 2012-12-05 08:53:29Z

3

var x = 1;
x = (x == 10)? 1:x+=1;
alert(x);

answered Dec 5, 2012 at 8:53

pbibergal

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