/** * @param {string} address * @return {string} */ var defangIPaddr = function(address) { let defangedIpAddr = ""; for(let i = 0; i < address.length; i++) { if(address[i] !== ".") defangedIpAddr = defangedIpAddr.concat(address[i]); else defangedIpAddr = defangedIpAddr.concat("[.]"); } return defangedIpAddr; };