javascript sets cookie validity period and detects cookies

This article mainly introduces JS settings Cookie Related information about validity period detection cookies. Friends who need it can refer to

Setting cookies Function Directly upload the code:

function setCookie(name, value, days) { //设置cookie
     var d = new Date();
     d.setTime(d.getTime() + (days * 24 * 60 * 60 * 1000));
     var expires = "expires=" + d.toUTCString();
     document.cookie = name + "=" + value + "; " + expires;
    }

Set cookies:

setCookie("key", 'value', 1);

Cookie detection:

document.cookie.indexOf("key")

Return value -1 means that this cookie does not exist

The above is the JS that the editor introduces to you to set cookies and detect cookie validity period. I hope it will be helpful to everyone. If you have any questions, please leave me a message. The editor will reply to everyone in time. I would also like to thank everyone for your support of the Script House website!

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