Question

I am trying to split up substring charaters from a string from what i have tryed so far has failed even looping within a loop.

An example result from string “1234567890” the output could look like as follows

12
345
6
7890

.

var randomChar = ""
var str = "123456789";

for (var j = 0; j < str.length; j++) {
randomChar = Math.floor(Math.random() * 3) + 1;

console.log(str.substr(j, randomChar));
}

Answer 1

here you go:

    var substrSize;
    while (str.length) {
         substrSize = Math.floor(Math.random()*3)+1; // at most 4? 
         if (substrSize >= str.length)
             randomChar = str;
         else
             randomChar = str.substr(0,substrSize);
         str = str.substr(randomChar.length);
         console.log(randomChar);
    }

or alternatively:

    var j = 0;
    while (j < str.length) {
         var n= j+Math.floor(Math.random() * 3) + 1;
         if (n> str.length) n= str.length;
         console.log(str.substring(j, n));
         j = n;
    }

or alternatively:

    var j = 0;
    while (j < str.length) {
         var n= Math.floor(Math.random() * 3) + 1;
         if (j+n> str.length) n= str.length-j;
         console.log(str.substr(j, n));
         j += n;
    }