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How to merge two strings alternatively in JavaScript
We are required to write a JavaScript function that takes in two. Our function should then return a new array that contains characters alternatively from both the strings.
For example: If the two strings are −
const str1 = 'abc'; const str2 = 'def';
Output
Then the output should be −
const output = 'adbecf';
Example
The code for this will be −
const str1 = 'abc'; const str2 = 'def'; const mergeAlternatively = (str1, str2) => { const a = str1.split("").filter(el => !!el); const b = str2.split(""); let mergedString = ''; for(var i = 0; i < a.length || i < b.length; i++){ if(i < a.length){ mergedString += a[i]; }; if(i < b.length){ mergedString += b[i]; }; }; return mergedString; }; console.log(mergeAlternatively(str1, str2));
Output
The output in the console −
adbecf
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