ipadのSafariで動かなかったのメモ

More than 1 year has passed since last update.

javascriptの関数のデフォルト値

function resetCanvas(canvas,jsonData=null) {

function resetCanvas(canvas,jsonData) {
    var j = (j !== undefined) ? j : null;

アロー関数

resetCanvas = (canvas) => {

resetCanvas =function(canvas) {

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