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Closures means how JavaScript’s function scopes behave. -
yogi
Jan 12 '17 03:48
1
Phpworker
answered Nov 30 '-1 00:00
JavaScript Closures means functions 'remember' variables / function in which they were created.and its there local variables and function which is work as private member of closure.
function abc(){
var abc='';
function setString(){
abc='abc';
}
setString();
return function (){
return abc;
}
}
i made abc closure and it have abc variable . setString function .
so abc function have one private variable and private function setString .because in closure function , variable and function is not available to direct access.
try to access closure 's variable and get Error : undefined variable
and try to access colsure 's function and get Error : Uncaught TypeError
Closure help to create replica of instance with differ value. so it helps to reuse code .