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javascript - How does JS listen to the focus gaining and losing focus events of the browser page window?

For example:

当切换其他页面,当前页面失去焦点时,当前页面所执行的脚本停止,切换回来之后继续之前的脚本开始执行。
PHP中文网PHP中文网2857 days ago613

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  • phpcn_u1582

    phpcn_u15822017-05-19 10:21:40

    Try visibilitychange event

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  • phpcn_u1582

    phpcn_u15822017-05-19 10:21:40

    window.onfocus and window.onblur also work

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