First item from a Map on JavaScript ES2015

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眼角桃花
眼角桃花 2020-12-09 14:25

I have a Map like this:

const m = new Map();
m.set(\'key1\', {})
.
m.set(\'keyN\' {})

the Mapcan have 1 or many i

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  •  温柔的废话
    2020-12-09 15:22

    It could also done using spread feature at ES6 and next versions

    const m = new Map();
    m.set('key1', 1);
    m.set('key2', 2);
    
    console.log([...m][0]);    // ['key1', 1] 

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