Javascript Interview Question String Delete Characters

Introduction

Write a JavaScript function that deletes characters from a string.

Do not use Regular Expressions.

Use this prototype: 

funtion removeChars(str, remove);

Test cases 

removeChars('The Elder Scrolls of Morrowind', 'eEoi');

returns 'Th ldr Scrlls f Mrrwnd'




/**
 * @function {public static} removeChars
 *
 * Removes characters from a given `String`.
 *
 * @param {String} str - the source `String`.
 * @param {String} remove - a `String` that contains the characters
 * to be removed.
 *
 * @return the modified `String`.
 */
function removeChars(str, remove) {
    var flags = {};
    var i = 0;
    var len = 0;
    var buffer = [];

    for (i = 0, len = remove.length; i < len; i++) {
        flags[remove[i]] = true;
    }

    len = str.length;
    i = 0;

    var s = '';

    while (i < len) {
        s = str[i];

        if (!flags[s]) {
            buffer.push(s);
        }

        i++;
    }

    return buffer.join('');
}

console.log( removeChars('The Elder Scrolls of Morrowind', 'eEoi') );

/*
Output: ($ /usr/bin/node 001.js)
Th ldr Scrlls f Mrrwnd
*/



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