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    /**
    * 创建cookie
    */
    function _setCookie (cname, cvalue, exdays) {
    var d = new Date()
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000))
    var expires = 'expires' + d.toGMTString()
    document.cookie = cname + '=' + cvalue + '; ' + expires
    }

    /**
    * 获取cookie
    */
    function _getCookie (cname) {
    var name = cname + '='
    var ca = document.cookie.split('; ')
    for (var i = 0; i < ca.length; i++) {
    var c = ca[i].trim()
    if (c.indexOf(name) == 0) return c.substring(name.length, c.length)
    }
    return ''
    }

    /**
    * 删除cookie
    */
    function _delCookie (name) {
    var exp = new Date()
    exp.setTime(exp.getTime() - 1)
    var cval = getCookie(name)
    if (cval !== null) {
    var expires = 'expires' + d.toGMTString()
    document.cookie = name + '=' + cval + '; ' + expires
    }
    }

    /**
    * 清空所有cookie
    */
    function _delAllCookie () {
    var arrCookie = document.cookie.split('; ')//将多个cookie分割成多个键值对
    for (var i = 0; i < arrCookie.length; i++) {
    var arr = arrCookie[i].split('=')
    if (arr.length > 0) {
    _delCookie(arr[0])
    }
    }
    }
    https://www.cnblogs.com/gg1234/p/5611086.html
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  • 原文地址:https://www.cnblogs.com/z-dl/p/9081727.html
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