javascript

{
    ['j','a','v','a','s','c','r','i','p','t'].slice(0);     //['j','a','v','a','s','c','r','i','p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(1);     //['a','v','a','s','c','r','i','p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(2);     //['v','a','s','c','r','i','p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(0, 1);  //['j']
    ['j','a','v','a','s','c','r','i','p','t'].slice(1, 2);  //['a']
    ['j','a','v','a','s','c','r','i','p','t'].slice(0, 2);  //['j','a']
    ['j','a','v','a','s','c','r','i','p','t'].slice(0, 3);  //['j','a','v']
    ['j','a','v','a','s','c','r','i','p','t'].slice(5, 10); //['c','r','i','p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(5, -1); //['c','r','i','p']
    ['j','a','v','a','s','c','r','i','p','t'].slice(5, -2); //['c','r','i']
    ['j','a','v','a','s','c','r','i','p','t'].slice(-1);    //['t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(-2);    //['p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(-3);    //['i','p','t']
    ['j','a','v','a','s','c','r','i','p','t'].slice(-3, -1);//['i','p']
    ['j','a','v','a','s','c','r','i','p','t'].slice(-3, -2);//['i']
}

{
    const arrNum1 = [100, 200, 300, 400, 500];
    const result1 = arrNum1.splice(1);

    // console.log(result1);    // [200, 300, 400, 500] 
    // console.log(arrNum1);    // [100]

    const arrNum2 = [100, 200, 300, 400, 500];
    const result2 = arrNum2.splice(1, 2);

    // console.log(result2);   // [200, 300]
    // console.log(arrNum2);   // [100, 400, 500]

    const arrNum3 = [100, 200, 300, 400, 500];
    const result3 = arrNum3.splice(1, 4);

    // console.log(result3);   // [200, 300, 400, 500]
    // console.log(arrNum3);   // [100]

    const arrNum4 = [100, 200, 300, 400, 500];
    const result4 = arrNum4.splice(1, 2, "javascript");

    // console.log(result4);   // [200, 300]
    // console.log(arrNum4);   // [100, "javascript", 400, 500]

    const arrNum5 = [100, 200, 300, 400, 500];
    const result5 = arrNum5.splice(1, 0, "javascript");

    // console.log(result5);   // []
    // console.log(arrNum5);   // [100, "javascript",200, 300, 400, 500]

    const arrNum6 = [100, 200, 300, 400, 500];
    const result6 = arrNum6.splice(0, 4, "javascript");

    // console.log(result6);   // [100, 200, 300, 400]
    // console.log(arrNum6);   // ["javascript", 500]

    const arrNum7 = [100, 200, 300, 400, 500];
    const result7 = arrNum7.splice(2, 2, "javascript", "react");

    // console.log(result7);   // [300, 400]
    // console.log(arrNum7);   // [100, 200, "javascript", "react", 500]

    const arrNum8 = [100, 200, 300, 400, 500];
    const result8 = arrNum8.splice(-2, 2, "javascript");

    // console.log(result8);   // [400, 500]
    // console.log(arrNum8);   // [100, 200, 300, "javascript"]
}