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javascript - HTML文本输入仅允许数字输入(HTML text input allow only numeric input)

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javascript - HTML文本输入仅允许数字输入(HTML text input allow only numeric input)

有没有一种快速的方法来将HTML文本输入（ <input type=text /> ）设置为仅允许数字键击（加'。'）？

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