将字符串数组转换为一个数组JS

Question

I faced a problem with array convertions. I have an array with different values like:

let fruitsArry = ['apple', 'apple, mango, orange', 'orange'];

And I need to convert it to array like:

let fruitsArrSplited = ['apple', 'apple', 'mango', 'orange', 'orange'];

Could you suggest me any simple solution for this?

Thanks in advance.

Answer 1

Just join and split with the separator of the quoted part.

 let fruitsArray = ['apple', 'apple, mango, orange', 'orange'], result = fruitsArray.join(', ').split(', '); console.log(result); 

With white space after comma, you could split with optional whitepsace.

 let fruitsArray = ['apple', 'apple, mango, orange', 'orange'], result = fruitsArray.join().split(/,\\s*/); console.log(result); 

Answer 2

Just use join(',') and split(',') . And further use map() (optional) to remove the trailing and leading whitespaces. This will also ensures that there can be any amount of whitespaces between array element.

 let fruitsArry = ['apple', 'apple, mango, orange', 'orange']; var res = fruitsArry.join(',').split(',').map(item=>item.trim()); console.log(res); 

Answer 3

Without join(" ,") which generates an unnecessary intermediate string, you may do as follows;

 var fruitsArry = ['apple', 'apple, mango, orange', 'orange'], result = fruitsArry.reduce((r,e) => r.concat(e.includes(",") ? e.split(/\\s*,\\s*/) : e),[]); console.log(result); 

Answer 4

 let array = ['apple', ' apple , mango , orange ', 'orange']; newArray = array.join(',').split(/\\s*,\\s*/); console.log(newArray); 

I think this should do the trick. This will handle white space before and after each word too.

Answer 5

To answer your question simply you can use:

const af=a=>a.join(',').split(',').map(e=>e.trim()); // 45 character

and use it like:

let res = af(['apple', 'apple, mango, orange', 'orange']);
console.log(res);

Or if you prefer the long version:

/**
 * Define the function
 */
function formatArray(arr) {
  let tmp: string[];
  let result: string[] = [];

  tmp = arr.join(',').split(',');

  tmp.forEach((el, i) => {
    let str = el.trim();  // this is to remove the extra spaces
    result.push(str); // add the element to final array
  });
  return result;
}

And use it as:

// The orignal array
let arr = ['apple', 'apple, mango, orange', 'orange'];
arr = formatArray(arr);
console.log(arr);

Note that trimming part in the function, is an option you might not need this in your case but I figured out this is what you might want.

Answer 6

You may use _js. Underscore Js Documentation

let fruitsArry = ['apple', 'apple, mango, orange', 'orange'];
var res = _.chain(fruitsArry).map(function(fruit) { return fruit.split(',') }).flatten().value()

console.log(res)