var students = [];
students.push("bluce","jordan","marlon","kobe");//入栈4项
alert(students.length); //4
alert(students[0]); //"bluce",第一项在栈的底部
alert(students[1]); //"jordan"
students.push("paul");
alert(students.length); //5
var item = students.pop(); //"paul"
alert(students.length); //4
var students = [];
students.push("bluce","jordan","marlon","kobe");//入队4项
//students=["bluce","jordan","marlon","kobe"];
alert(students.length); //4
alert(students[0]); //"bluce",第一项在栈的底部
alert(students[1]); //"jordan"
students.push("paul");
alert(students.length); //5
//students=["bluce","jordan","marlon","kobe","paul"];
var item = students.shift(); //"bluce"
alert(students.length); //4
//students=["jordan","marlon","kobe","paul"];
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