意外令牌ILLEGAL（前100个素数）

Question

I'm running into the below errors and I'm not quite sure as to why. Bare in mind, I'm using Node.js. The goal is to output the first 100 prime numbers to a 'hello.txt' file. Please advise how to get this working! Thanks.

error msg:

return arr.join(“,”);
^
SyntaxError: Unexpected token ILLEGAL
at Module._compile (module.js:439:25)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:901:3

first 100 primes code:

#!/usr/bin/env node

var prime = function (n) {
if (n === 2 || n === 3 || n === 5 || n === 7 || n === 11 || n === 13 || n === 17 || n === 19) {return n;}
if (n % 2 > 0 && n % 3 > 0 && n % 5 > 0 && n % 7 > 0 && n % 11 > 0 && n % 13 > 0 && n % 17 > 0 && n % 19 > 0 && n % Math.sqrt (n) > 0) {return n;}
};

var first100primes = function(k) {
var n = 1;
var arr = [];

for (n = 1; n < k+1; n++) {
arr.push(prime (n));
}
arr = arr.filter(Number);
arr.length=100;
return arr;
};

var fmt = function (arr) {
return arr.join(“,”);
};

var final = (fmt(first100primes(1000)));

var fs = require(‘fs’);
var outfile = “prime.txt”;
var out = final + “,”;
fs.writeFileSync(outfile, out);
console.log(“Script: ” + __filename + “\nWrote: ” + out + “To: ” + outfile);

Answer 1

“ is not the same as " . Similarly, ' and ' are not the same.

Change each occurance of “ and ' to " and ' respectively, and your code should work fine.