Switch Vs Ifs
JavaScript performance comparison
Revision 3 of this test case created
Preparation code
<script>
var $kids = [1, 2, 3, 4],
iterator,
grid;
</script>
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Testing in unknown unknown
| Test |
Ops/sec |
switch |
switch ( $kids.length) {
case 1:
iterator = 1;
grid = 'solo';
break;
case 2:
iterator = 2;
grid = 'a';
break;
case 3:
iterator = 3;
grid = 'b';
break;
case 4:
iterator = 4;
grid = 'c';
break;
case 5:
iterator = 5;
grid = 'd';
break;
default:
iterator = 2;
grid = 'a';
break;
}
|
pending… |
Ifs statements |
var len = $kids.length;
if ( len === 1 ) {
iterator = 1;
grid = 'solo';
}
if ( len === 2 ) {
iterator = 2;
grid = 'a';
}
if ( len === 3 ) {
iterator = 3;
grid = 'b';
}
if ( len === 4 ) {
iterator = 4;
grid = 'c';
}
if ( len === 5 ) {
iterator = 5;
grid = 'd';
}
if ( len > 5 ) {
iterator = 2;
grid = 'a';
}
|
pending… |
else if |
var len = $kids.length;
if ( len === 1 ) {
iterator = 1;
grid = 'solo';
}
else if ( len === 2 ) {
iterator = 2;
grid = 'a';
}
else if ( len === 3 ) {
iterator = 3;
grid = 'b';
}
else if ( len === 4 ) {
iterator = 4;
grid = 'c';
}
else if ( len === 5 ) {
iterator = 5;
grid = 'd';
}
else if ( len > 5 ) {
iterator = 2;
grid = 'a';
}
|
pending… |
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