CODEWITHSUNDEEP
javascript
TMH
TMH

Reputation: 6246

Map string 1 and 0 to true or false

I'm trying to map some data, from a string to a boolean (if possible).

Say I have this array (all the values are of type string).

var values = array["1", "0", "0", "1", "SomethingElse"];

I want to map the 1s to true, 0s to value, and SomethingElse just returns itself.

My idea is to have a map object

map = {
    1: true,
    0: false  
};

Then have a wrapper function check if the key is set, if not return itself. Something like this 

function mapValue(val) {
    return (isset(map[val])) ? map[val] : val;
}

var newValues = [];
angular.forEach(values, function(val, key) {
    newValues[key] = mapValue(val);
});

That's my rough plan. Is this a good approach to this problem? Or is there a much simpler way I could do this?

Upvotes: 0

Views: 318

Answers (1)

thefourtheye
thefourtheye

Reputation: 239443

You can use the Array.prototype.map function, like this

var values = ["1", "0", "0", "1", "SomethingElse"],
    map    = { 1: true, 0: false };

console.log(values.map(function(currentItem) {
    return map.hasOwnProperty(currentItem) ? map[currentItem] : currentItem;
}));
# [ true, false, false, true, 'SomethingElse' ]

Upvotes: 3

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