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36 lines
842 B
36 lines
842 B
2 years ago
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var Tween = require('./Tween');
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var defaults = require('./defaults');
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var noop = require('./noop');
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var isNum = require('./isNum');
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var $offset = require('./$offset');
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exports = function(target, options) {
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options = options || {};
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defaults(options, defOpts);
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if (!isNum(target)) target = $offset(target).top;
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new Tween({
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y: window.pageYOffset
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})
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.on('update', function(target) {
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window.scroll(0, target.y);
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})
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.on('end', function() {
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options.callback();
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})
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.to(
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{
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y: target - options.tolerance
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},
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options.duration,
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options.easing
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)
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.play();
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};
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var defOpts = {
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tolerance: 0,
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duration: 800,
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easing: 'outQuart',
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callback: noop
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};
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module.exports = exports;
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