两个数组拼接,拼接为res

一个数组num,另外一个数组same,拼接成res


 let num=[73, 74, 75, 76]
    let same=[76, 79, 83, 89]
    let res="M 73,76 L74,79 L75,83 L76,89"

img



<script> 
    let num = [73, 74, 75, 76]

    let same = [76, 79, 83, 89]

    var arr =[]
    for (var i = 0; i < num.length; i++) {
        arr.push(`${i == 0 ? 'M ' : 'L'}${num[i]},${same[i]}`);
    }
    var s = arr.join(' ')
    alert(s)
</script>

img

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