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Prevents calling jump() while current jump is in progress #69

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Prevents calling jump() while current jump is in progress #69

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8 changes: 8 additions & 0 deletions src/jump.js
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ const jumper = () => {

let start // where scroll starts (px)
let stop // where scroll stops (px)
let scrolling // scrolling state (boolean)

let offset // adjustment from the stop position (px)
let easing // easing function (function)
Expand Down Expand Up @@ -61,6 +62,8 @@ const jumper = () => {
// scroll finished helper

function done () {
scrolling = false

// account for rAF time rounding inaccuracies
window.scrollTo(0, start + distance)

Expand All @@ -85,6 +88,11 @@ const jumper = () => {
// API

function jump (target, options = {}) {
if (scrolling) {
return
}
scrolling = true

// resolve options, or use defaults
duration = options.duration || 1000
offset = options.offset || 0
Expand Down