Concat数组成一个数组（JS或Lodash）

Question

Input:

var array1 = ["12346","12347\n12348","12349"];

Steps:

Replace \\n with ',' and Add into list.

Output:

var array2 = ["12346","12347","12348","12349"];

I tried below logic but not reach to output. Looks like something is missing.

var array2 = [];

_.forEach(array1, function (item) {               
       var splitData = _.replace(item, /\s+/g, ',').split(',').join();
       array2.push(splitData);
});

Output of my code:

["12346","12347,12348","12349"]

Answer 1

You could join it with newline '\\n' and split it by newline for the result.

 var array= ["12346", "12347\\n12348", "12349"], result = array.join('\\n').split('\\n'); console.log(result); 

Answer 2

If you're using lodash, applying flatmap would be the simplest way:

 var array1 = ["12346", "12347\\n12348", "12349"]; var array2 = _.flatMap(array1, (e) => e.split('\\n')); console.log(array2); //=> ["12346", "12347", "12348", "12349"] 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script> 

Answer 3

An alternate to @Nina's answer would be to use Array.push.apply with string.split(/\\n/)

 var array= ["12346","12347\\n12348","12349"]; var result = [] array.forEach(function(item){ result.push.apply(result, item.split(/\\n/)) }) console.log(result);