Undefined testing performance (non-negative)

JavaScript performance comparison

Revision 2 of this test case created

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
TypeOf
var loops = 1e6,
    undef = void 0,
    foo;
 
while(loops--) {
    if( typeof foo === 'undefined' ) {}
}
pending…
Cached undefined
var loops = 1e6,
    undef = void 0,
    foo;
 
while(loops--) {
    if( foo === undef) {}
}
pending…
Direct undefined
var loops = 1e6,
    undef = void 0,
    foo;
 
while(loops--) {
    if( foo === undefined) {}
}
pending…
Calculated undefined
var loops = 1e6,
    undef = void 0,
    foo;
 
while(loops--) {
    if( foo === void 0) {}
}
pending…

Compare results of other browsers

Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

0 comments

Add a comment