Javascript Regular Expressions Replace all whitespace with an empty string

Palindrome

Create a function which returns true if the parameter is a palindrome.

A string which is the same forwards as it is backwards. 

// Solution//from w ww  . ja  v  a  2 s. c  o m
function palindrome(str) { 
    var reverse = str.replace(/[\s]/g, "").split('').reverse().join('');
    str = str.replace(/[\s]/g, "");
   
    return (str === reverse ? true : false);        
}

// Output
console.log(palindrome("racecar"));
// => true

console.log(palindrome("never odd or even"));
// => true

console.log(palindrome("eye spy"));
// => false

Notes

.replace(/[\s]/g, "") - Replace all whitespace with an empty string.




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