window.localStorage和localStorage之间有什么区别吗? | ocalStorage和localStorage之间有什么区别吗

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问题描述

我一直在做以下事情:

var store = window.localStorage;
store.setItem()

但是现在我看到了执行此操作的代码:

but now I see code doing this:

localStorage.setItem()

两者都做同一件事吗?

推荐答案

除非您在自定义定义的范围内声明了名为localStorage的变量，否则它们是相同的. localStorage指window.localStorage.实际上，全局命名空间中的每个变量都可以作为window.<variableName>

Unless you've declared a variable named localStorage in a custom defined scope, they're the same. localStorage refers to window.localStorage. In fact every variable in global namespace can be accessed as window.<variableName>

例如:

<script>
function foo() {
    // here window.localStorage == localStorage
}
function foo2 {
    var localStorage = 10;
    // here window.localStorage != localStorage
    // since you have a local variable named localStorage
}
</script>

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