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fixes #170, fixes #266 ... reimplementing throttle in terms of debounce.

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This commit is contained in:
Jeremy Ashkenas
2011-10-24 13:13:24 -04:00
parent cfec39fd4e
commit b4d9503340
2 changed files with 43 additions and 19 deletions
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20
test/functions.js
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@@ -90,16 +90,32 @@ $(document).ready(function() {
_.delay(function(){ ok(deferred, "deferred the function"); start(); }, 50);
});
asyncTest("functions: throttle", 1, function() {
asyncTest("functions: throttle", 2, function() {
var counter = 0;
var incr = function(){ counter++; };
var throttledIncr = _.throttle(incr, 100);
throttledIncr(); throttledIncr(); throttledIncr();
setTimeout(throttledIncr, 70);
setTimeout(throttledIncr, 120);
setTimeout(throttledIncr, 140);
setTimeout(throttledIncr, 190);
setTimeout(throttledIncr, 220);
setTimeout(throttledIncr, 240);
_.delay(function(){ ok(counter == 3, "incr was throttled"); start(); }, 400);
_.delay(function(){ ok(counter == 1, "incr was called immediately"); }, 30);
_.delay(function(){ ok(counter == 4, "incr was throttled"); start(); }, 400);
});
asyncTest("functions: throttle arguments", 2, function() {
var value = 0;
var update = function(val){ value = val; };
var throttledUpdate = _.throttle(update, 100);
throttledUpdate(1); throttledUpdate(2); throttledUpdate(3);
setTimeout(function(){ throttledUpdate(4); }, 120);
setTimeout(function(){ throttledUpdate(5); }, 140);
setTimeout(function(){ throttledUpdate(6); }, 260);
setTimeout(function(){ throttledUpdate(7); }, 270);
_.delay(function(){ ok(value == 1, "updated to latest value"); }, 40);
_.delay(function(){ ok(value == 7, "updated to latest value"); start(); }, 400);
});
asyncTest("functions: debounce", 1, function() {