Pass default parameter values in function react

Question

I got this error after updating react-native and react

I think this is right syntax, but I don't know why this error is shown:

 this.list = function(table, callback, wheredata = [],selection = '',extra = '') {

SyntaxError: Unexpected token =
at exports.runInThisContext (vm.js:53:16)
at Module._compile (module.js:387:25)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Module.require (module.js:367:17)
at require (internal/module.js:16:19)
at Object. (/Users/apcrat/Documents/redux/delfoo_React/api/model/catalog/cuisine_route.js:7:12)
at Module._compile (module.js:413:34)
at Object.Module._extensions..js (module.js:422:10)

You are going to need to give more context.. Are you using that in a `class`? — Nicholas Robinson, Aug 08 '16 at 12:05
you cannot set default value for argument in Ecmascript 5. you can set `wheredata = wheredata || [];` inside your function — Olivier Boissé, Aug 08 '16 at 12:18

score 2 · Answer 1 · edited May 23 '17 at 10:34

2

You need to compile your code with Babel.js to use Ecmascript 6 features or if you want to work on es5, you can do like this

edited May 23 '17 at 10:34

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answered Aug 08 '16 at 13:43

the_bluescreen

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I am tried to work on React-native. and i am using this to create API.and i am also using babel.js and ES5 – Nilay Brahmbhatt Aug 10 '16 at 05:04

Pass default parameter values in function react

1 Answers1