CODEWITHSUNDEEP
javascriptinternet-explorer
Simon Yo
Simon Yo

Reputation: 101

Syntax error only in IE for Arrow Notation

I've been using this line of code to match these two arrays so they have the same amount of data.

var items = viewModel.Date1;
var items2 = viewModel.Date2;            
items = items2.map( row =>

    //is there a matching row in items?
    items.filter( r => r.theString == row.theString).length ==  0 ?

    //if not, fill with zeros
    {theString:0, theCount:0} :

    //if there is, return the items' row
    items.filter( r => r.theString == row.theString)[0] );

In IE, using => gives me a Syntax error.

How do I rewrite this so it works in Firefox, Chrome, and IE?

Upvotes: 3

Views: 1627

Answers (2)

Moshe L
Moshe L

Reputation: 1905

arrow function

r => r.theString == row.theString[0]

change to

function(r) { r.theString == row.theString[0] }

Upvotes: 1

Kody
Kody

Reputation: 1378

http://caniuse.com/#feat=arrow-functions

Arrow functions are not yet in IE.

You would be best running your code through a JS compiler like Babel, http://babeljs.io/

Upvotes: 2

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