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var arr = ["JavaScript", "PHP", "C", "Python"]; delete arr[0]; // Change the element to undefined document.write(arr.toString()); /* run: ,PHP,C,Python */
var arr = ["JavaScript", "PHP", "C", "Python"]; delete arr[0]; // Change the element to undefined for (i = 0; i < arr.length; i++) { document.write(arr[i] + "<br />"); } /* run: undefined PHP C Python */