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Simplify _.debounce and _.throttle for the underscore build.

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Former-commit-id: 56dc526cf71130084651d06b8caadce573471131
This commit is contained in:
John-David Dalton
2013-04-16 01:52:47 -07:00
parent 562b4eb531
commit c3ac172960
3 changed files with 104 additions and 60 deletions
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43
dist/lodash.underscore.js vendored
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@@ -3482,35 +3482,27 @@
* var lazyLayout = _.debounce(calculateLayout, 300);
* jQuery(window).on('resize', lazyLayout);
*/
function debounce(func, wait, options) {
function debounce(func, wait, immediate) {
var args,
result,
thisArg,
timeoutId,
trailing = true;
timeoutId;
function delayed() {
timeoutId = null;
if (trailing) {
if (!immediate) {
result = func.apply(thisArg, args);
}
}
if (options === true) {
var leading = true;
trailing = false;
} else if (options && objectTypes[typeof options]) {
leading = options.leading;
trailing = 'trailing' in options ? options.trailing : trailing;
}
return function() {
var isLeading = leading && !timeoutId;
var isImmediate = immediate && !timeoutId;
args = arguments;
thisArg = this;
clearTimeout(timeoutId);
timeoutId = setTimeout(delayed, wait);
if (isLeading) {
if (isImmediate) {
result = func.apply(thisArg, args);
}
return result;
@@ -3667,35 +3659,22 @@
* var throttled = _.throttle(updatePosition, 100);
* jQuery(window).on('scroll', throttled);
*/
function throttle(func, wait, options) {
function throttle(func, wait) {
var args,
result,
thisArg,
timeoutId,
lastCalled = 0,
leading = true,
trailing = true;
lastCalled = 0;
function trailingCall() {
lastCalled = new Date;
timeoutId = null;
if (trailing) {
result = func.apply(thisArg, args);
}
}
if (options === false) {
leading = false;
} else if (options && objectTypes[typeof options]) {
leading = 'leading' in options ? options.leading : leading;
trailing = 'trailing' in options ? options.trailing : trailing;
result = func.apply(thisArg, args);
}
return function() {
var now = new Date;
if (!timeoutId && !leading) {
lastCalled = now;
}
var remaining = wait - (now - lastCalled);
var now = new Date,
remaining = wait - (now - lastCalled);
args = arguments;
thisArg = this;