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This commit is contained in:
Max Lynch
2013-11-08 15:44:22 -06:00
parent 8a7db90aaf
commit 7c4a37e56a
6 changed files with 84 additions and 71 deletions
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28
js/utils/utils.js
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@ -1,6 +1,33 @@
(function(ionic) {
ionic.Utils = {
throttle: function(func, wait, options) {
var context, args, result;
var timeout = null;
var previous = 0;
options || (options = {});
var later = function() {
previous = options.leading === false ? 0 : Date.now();
timeout = null;
result = func.apply(context, args);
};
return function() {
var now = Date.now();
if (!previous && options.leading === false) previous = now;
var remaining = wait - (now - previous);
context = this;
args = arguments;
if (remaining <= 0) {
clearTimeout(timeout);
timeout = null;
previous = now;
result = func.apply(context, args);
} else if (!timeout && options.trailing !== false) {
timeout = setTimeout(later, remaining);
}
return result;
};
},
// Borrowed from Backbone.js's extend
// Helper function to correctly set up the prototype chain, for subclasses.
// Similar to `goog.inherits`, but uses a hash of prototype properties and
@ -55,5 +82,6 @@
ionic.inherit = ionic.Utils.inherit;
ionic.extend = ionic.Utils.extend;
ionic.throttle = ionic.Utils.throttle;
})(window.ionic);