Using Local Function Variables

optimization

by sirfizx

JavaScript

// i is in global namespace
t0 = new Date(); 
var i; 
for (i=0; i<1000000; i++); 
t1 = new Date(); 

// i is in local namespace
function count() { 
var i; 
for (i=0; i<1000000; i++); 
} 
count(); 
t2 = new Date(); 

d = document; 
d.write('Without local variables = ', t1-t0, '<br />'); 
d.write('With local variables = ', t2-t1, '<br />');