javascript - 数一数我说了多少次同一个词

Question

我的变量 tag 返回以下 4 个不同值之一:assistance、bug、evolution 或 维护。我想数一数我有多少次这些词。我想首先显示我在控制台中拥有这些项目的次数。我真的不知道该怎么做。这是我的代码:

function displaytickets(y){
    $.ajax({
        url: "https://cubber.zendesk.com/api/v2/users/" + y + "/tickets/requested.json?per_page=150",
        type: 'GET',
        dataType: 'json',
        cors: true ,
        contentType: 'application/json',
        secure: true,
        beforeSend: function(xhr) {
            xhr.setRequestHeader ("Authorization", "Basic " + btoa(""));
        },
        success: function(data) {
            var sortbydate = data.tickets.sort(function(a, b){ 
                return new Date(b.created_at) - new Date(a.created_at); 
            });
            var ids = $.map(data.tickets, function (data) { 
                return data.id;
            })
            localStorage.setItem("mesid", ids);

            for (i = 0; i < data.tickets.length; i++) {
                var myticket = data.tickets[i];
                var mydate = data.tickets[i].created_at;
                var created = moment(mydate).format("MM-DD-YY");
                var mytitle = data.tickets[i].subject;
                var description = data.tickets[i].description;
                var status = data.tickets[i].status;
                var tag = data.tickets[i].tags[0];
                console.log(tag);
                var myid = data.tickets[i].id;
            }

            var nbticket = data.tickets.length;
            $("#name").append('<h2 class="title">' + " " + nbticket + " ticket(s)" + '</h2>');
        },
    });
}

这是我从 console.log(tag) 的控制台得到的:

Answer 1

您可以通过使用一个对象来存储出现次数，以字符串本身作为键值来实现这一点。试试这个:

var occurrences = {};

然后在您的 success 处理程序中，您可以在找到标签时添加和递增标签:

success: function(data) {
    // your code here...

    for (i = 0; i < data.tickets.length; i++) {
        // your code here...

        var tag = data.tickets[i].tags[0];
        if (occurrences.hasOwnProperty(tag)) {
            occurrences[tag]++;
        } else {
            occurrences[tag] = 1;
        }            
    }

    console.log(occurrences);
},

Working example