javascript对象键区分大小写吗? [英] Are javascript object keys case sensitive?

问题描述

我试图通过对象键来修复javascript数组中的重复项.该循环在同一对象中将虚拟现实"和虚拟现实"添加为不同的键.有没有办法使Javascript对象不区分大小写?

I was trying to fix duplicate items in an array on javascript by the means of object keys. The loop added 'virtual reality' and 'Virtual Reality' in the same object as different keys. Is there a way to make Javascript object not case sensitive ?

推荐答案

While object properties are strings and they are case sensitive, you could use an own standard and use only lower case letters for the access.

您可以应用 将String#toLowerCase 插入键，并使用函数作为访问的包装器.

You could apply a String#toLowerCase to the key and use a function as wrapper for the access.

带有包装对象的示例.

function insert(key, value) {
    if (!wrapper[key.toLowerCase()]) {
        wrapper[key.toLowerCase()] = key;
    }
    data[wrapper[key.toLowerCase()]] = value;
}

var data = {},
    wrapper = {};

insert('Foo', 'bar');
console.log(data);
insert('FOO', '42');
console.log(data);

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