We are required to write a JavaScript function that takes in two strings, creates and returns a new string with first two words of first string, next two words of second string, then first, then second and so on.
For example −
If the strings are −
const str1 = 'Hello world'; const str2 = 'How are you btw';
Then the output should be −
const output = 'HeHollw o arwoe rlyodu btw';
Example
Let us write the code for this function −
const str1 = 'Hello world'; const str2 = 'How are you btw'; const twiceJoin = (str1 = '', str2 = '') => { let res = '', i = 0, j = 0, temp = ''; for(let ind = 0; i < str1.length; ind++){ if(ind % 2 === 0){ temp = (str1[i] || '') + (str1[i+1] || '') res += temp; i += 2; }else{ temp = (str2[j] || '') + (str2[j+1] || '') res += temp; j += 2; } }; while(j < str2.length){ res += str2[j++]; }; return res; }; console.log(twiceJoin(str1, str2));
Output
Following is the output in the console −
HeHollw o arwoe rlyodu btw