绝妙的代码

字符串去重

function uniqStr(str) {
    var str = str.split('');
    var zarr = [];
    for (var i = 0; i < str.length; i++) {
        if (zarr.indexOf(str[i]) === -1) {
            zarr.push(str[i])
        }
    }
    return str.join('')
}

将字符放在对象中遍历拼接出字符串

function sc(str) {
    var obj = {
        r: "s",
        o: "i",
        t: "c",
        n: "u",
        F: "a"
    };
    var g = Object.keys(obj).concat(Object.values(obj));
    var str = str.split('/');
    var sr = '';
    for (var i = 0; i < str.length; i++) {
        sr = sr + g[str[i]];
    }
    return sr;
}
sc("4/8/3/7/2/6/1/3");//"constructor"
sc("7/1/3/5/2/0/8/7/2/1/0")//"Function"

把字符串的奇数位和偶数位分别提取到两个数组中

var str = "abcdef";
var a = str.split('');
var b = [];
var c = [];
for (var i = 0; i < a.length; i++) {
    if (i % 2 === 0) {
        b.push(a[i]);
    } else {
        c.push(a[i]);
    }
}

将两个数组按奇数位和偶数位插入拼接为字符串

    function jiou(b, c) {
        var b = b.split('');
        var c = c.split('');
        var m = [];
        for (var i = 0; i < b.length; i++) {
            m.push(1 + i * 2);
        }
        for (var j = 0; j < c.length; j++) {
            b.splice(m[j], 0, c[j])
        }
        return b.join('');
    };