Question

我正在练习数组和循环，并遇到了这段代码的问题。打印时，它不会打印出所有名称。它只打印：

I know someone called Athena

    var names = ["Paul", "Becky", "Aubrie", "Zeus", "Athena"];
    var x = 1;
    for (var i = 0; i < 5; i += x) {
        console.log("I know someone called " + names[i]);
    }

我做错了什么？

Answer 1

这是一种有点奇怪的循环方式，但你正在练习，很好。但是，您的代码正常工作。这是一个演示：

＆＃13;

var names = ["Paul", "Becky", "Aubrie", "Zeus", "Athena"];
var x = 1;
for (var i = 0; i < 5; i += x) {
    document.write("<br/>I know someone called " + names[i]);
}

＆＃13;

Answer 2

这有效：

var names = ["Paul", "Becky", "Aubrie", "Zeus", "Athena"];

for (var i = 0; names.length > i; i++) {
    console.log("I know someone called " + names[i]);
}

spring docs

Answer 3

更紧凑

var names = ["Paul", "Becky", "Aubrie", "Zeus", "Athena"];
    for (var i in names) {
        document.write("I know someone called " + names[i] + "<br>");
    }

for循环打印出整个数组的问题

3 个答案: