javascript - Simple JS Arrow Function: Missing Parenthesis After Argument List: Why? -


this simple javascript arrow function results in parser error. syntax seems consistent examples i've seen. syntax error , how correct it?

var things = []; things.push("a"); var containsa = things.some(t => t === "a");

the error: uncaught syntaxerror: missing ) after argument list

your code produces valid arrow function:

t => t === "a"

however, arrow functions experimental technology, part of ecmascript 6 proposal, still draft. therefore, not browsers have implemented them yet.

among major ones, firefox has. if attempt use them on chrome, error.


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