snippets for quickly zipping either multiple arrays or multiple strings.

quickzip.js

// Licence: Public domain

function zipArray(...params) {
    for (let i in params)
        if (!Array.isArray(params[i]))
            throw new Error(`All parameters to be zipped MUST be an array. Parameter ${i} is not.`);
    let out = [], count = Math.max(...params.map(i=>i.length));
    for (let i = 0; i < count; i++) {
        for (let param of params) {
            if (i < param.length) out.push(param[i]);
        }
    }
    return out;
}

function zipString(...params) {
    for (let i in params)
        if (typeof params[i] != 'string')
            throw new Error(`All parameters to be zipped MUST be an string. Parameter ${i} is not.`);
    let out = "", count = Math.max(...params.map(i=>i.length));
    for (let i = 0; i < count; i++) {
        for (let param of params) {
            if (i < param.length) out += param.slice(i,1);
        }
    }
    return out;
}