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slice在处理innerText时的作用？

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slice在处理innerText时的作用？

在看源码的时候看到这么一段代码：el.innerText.slice(0, -1)。就是疑惑为什么要使用slice(0, -1)再处理一下el.innerText，el.innerText不就已经获取到内容了吗？怎么做有什么用途吗？


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去除最后一位字符啊


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