VUE前端cookie操作

╰半橙微兮° 2022-01-25 15:59 194阅读 0赞

如下是简单cookie操作，当前仅限前端实例
    
    要注意的有两点：
    
    1、cookie内容存贮的名称
    
    2、删除cookie是通过设置过期为过去时间实现的
    
    <body>
    <div id="app">
        <button @click="clearCookie()">
            清除cookie
        </button>
    </div>
    </body>
    <script>
        let app = new Vue({
            el: "#app",
            data: {
            },
            created: function () {
                this.checkCookie();
            },
            methods: {
                //设置cookie
                setCookie: function (cname, cvalue, exdays) {
                    var d = new Date();
                    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
                    var expires = "expires=" + d.toUTCString();
                    console.info(cname + "=" + cvalue + "; " + expires);
                    document.cookie = cname + "=" + cvalue + "; " + expires;
                    console.info(document.cookie);
                },
                //获取cookie
                getCookie: function (cname) {
                    var name = cname + "=";
                    var ca = document.cookie.split(';');
                    for (var i = 0; i < ca.length; i++) {
                        var c = ca[i];
                        while (c.charAt(0) == ' ') c = c.substring(1);
                        if (c.indexOf(name) != -1) return c.substring(name.length, c.length);
                    }
                    return "";
                },
                //清除cookie
                clearCookie: function () {
                    this.setCookie("username", "", -1);
    
                },
                checkCookie: function () {
                    var user = this.getCookie("username");
                    if (user != "") {
                        alert("Welcome again " + user);
                    } else {
                        user = prompt("Please enter your name:", "");
                        if (user != "" && user != null) {
                            this.setCookie("username", user, 365);
                        }
                    }
                }
            }
        })
    </script>