在JS中组合数组

Question

如果您有2个经典和流行阵列：

classical=["Beethoven","Mozart","Tchaikovsky"];
pop=["Beatles","Corrs","Fleetwood Mac","Status Quo"];

为什么当你设置all=classical+pop时，它会给数组元素中的字符集赋予个别字符？

如何在不重新输入即all=["Beethoven","Mozart","Tchaikovsky","Beatles"...]

的情况下更正此问题

非常感谢提前。

Answer 1

使用Array类的concat（）方法将它们组合在一个新变量上：

var all = classical.concat(pop);

Answer 2

+首先将两个数组转换为字符串，然后添加字符串。为此，您需要使用concat方法。

> classical=["Beethoven","Mozart","Tchaikovsky"];
["Beethoven", "Mozart", "Tchaikovsky"]
> pop=["Beatles","Corrs","Fleetwood Mac","Status Quo"];
["Beatles", "Corrs", "Fleetwood Mac", "Status Quo"]
> all = classical.concat(pop)
["Beethoven", "Mozart", "Tchaikovsky", "Beatles", "Corrs", "Fleetwood Mac", "Status Quo"]