News_Flask_sss/app/static/news/js/detail.js

function getCookie(name) {
    var r = document.cookie.match("\\b" + name + "=([^;]*)\\b");
    return r ? r[1] : undefined;
}

$(function () {

    // 打开登录框
    $('.comment_form_logout').click(function () {
        $('.login_form_con').show();
    })

    // 收藏
    $(".collection").click(function () {
        var news_id = $(".collection").attr("data-newid")
        var action = "collect"
        var params = {
            "news_id": news_id,
            "action": action
        }
        $.ajax({
            url: "/news/news_collect",
            type: "post",
            contentType: "application/json",
            headers: {
                "X-CSRFToken": getCookie("csrf_token")
            },
            data: JSON.stringify(params),
            success: function (resp) {
                if (resp.errno == "0") {
                    // 收藏成功
                    // 隐藏收藏成功
                    $(".collection").hide();
                    // 显示取消收藏按钮
                    $(".collected").show();
                } else if (resp.errno == "4101") {
                    $(".login_form_con").show()
                } else {
                    alert(resp.errmsg)
                }
            }
        })

    });

    // 取消收藏
    $(".collected").click(function () {
        var news_id = $(".collected").attr("data-newid");
        var action = "cancel_collect"
        var params = {
            "news_id": news_id,
            "action": action
        };
        $.ajax({
            url: "/news/news_collect",
            type: "post",
            contentType: "application/json",
            headers: {
                "X-CSRFToken": getCookie("csrf_token")
            },
            data: JSON.stringify(params),
            success: function (resp) {
                if (resp.errno == "0") {
                    // 收藏成功
                    // 显示收藏按钮
                    $(".collection").show();
                    // 隐藏取消收藏按钮
                    $(".collected").hide();
                } else if (resp.errno == "4101") {
                    $(".login_form_con").show();
                } else {
                    alert(resp.errmsg);
                }

            }
        })

    });

    // 评论提交
    $(".comment_form").submit(function (e) {
        e.preventDefault();
        var news_id = $(this).attr('data-newsid');
        var news_comment = $('.comment_input').val();

        if (!news_comment) {
            alert("请输入评论内容");
            return
        }

        var params = {
            "news_id": news_id,
            "comment": news_comment
        };

        $.ajax({
            url: "/news/news_comment",
            type: "post",
            contentType: "application/json",
            headers: {
                "X-CSRFToken": getCookie("csrf_token")
            },
            data: JSON.stringify(params),
            success: function (resp) {
                if (resp.errno == "0") {
                    var comment = resp.data
                    // 拼接内容
                    var comment_html = ''
                    comment_html += '<div class="comment_list">'
                    comment_html += '<div class="person_pic fl">'
                    if (comment.user.avatar_url) {
                        comment_html += '<img src="' + comment.user.avatar_url + '" alt="用户图标">'
                    } else {
                        comment_html += '<img src="../../static/news/images/person01.png" alt="用户图标">'
                    }
                    comment_html += '</div>'
                    comment_html += '<div class="user_name fl">' + comment.user.nick_name + '</div>'
                    comment_html += '<div class="comment_text fl">'
                    comment_html += comment.content
                    comment_html += '</div>'
                    comment_html += '<div class="comment_time fl">' + comment.create_time + '</div>'

                    comment_html += '<a href="javascript:;" class="comment_up fr" data-commentid="' + comment.id + '" data-newsid="' + comment.news_id + '">赞</a>'
                    comment_html += '<a href="javascript:;" class="comment_reply fr">回复</a>'
                    comment_html += '<form class="reply_form fl" data-commentid="' + comment.id + '" data-newsid="' + news_id + '">'
                    comment_html += '<textarea class="reply_input"></textarea>'
                    comment_html += '<input type="button" value="回复" class="reply_sub fr">'
                    comment_html += '<input type="reset" name="" value="取消" class="reply_cancel fr">'
                    comment_html += '</form>'

                    comment_html += '</div>'

                    //拼接到内容的前面
                    $(".comment_list_con").prepend(comment_html)
                    //让comment_sub失去焦点
                    $(".comment_sub").blur();
                    //清空输入框内容
                    $(".comment_input").val("")
                    updateCommentCount()
                } else {
                    alert(resp.errmsg)
                }
            }
        })
    })

    $('.comment_list_con').delegate('a,input', 'click', function () {

        var sHandler = $(this).prop('class');

        if (sHandler.indexOf('comment_reply') >= 0) {
            $(this).next().toggle();
        }

        if (sHandler.indexOf('reply_cancel') >= 0) {
            $(this).parent().toggle();
        }

        if (sHandler.indexOf('comment_up') >= 0) {
            var $this = $(this);
            var action = "add";
            if (sHandler.indexOf('has_comment_up') >= 0) {
                // 如果当前该评论已经是点赞状态，再次点击会进行到此代码块内，代表要取消点赞
                action = "remove"
            }

            var comment_id = $(this).attr("data-commentid")
            var news_id = $(this).attr("data-newsid")
            var params = {
                "comment_id": comment_id,
                "action": action,
                "news_id": news_id
            }

            $.ajax({
                url: "/news/comment_like",
                type: "post",
                contentType: "application/json",
                headers:{
                    "X-CSRFToken": getCookie("csrf_token")
                },
                data: JSON.stringify(params),
                success: function (resp) {
                    if(resp.errno == "0"){
                        var like_count = $this.attr('data-likecount')

                        if(like_count == undefined){
                            like_count = 0
                        }

                        // 更新点赞按钮图标
                        if(action == "add"){
                            like_count = parseInt(like_count) + 1
                            // 点赞
                            $this.addClass("has_comment_up")
                        }else{
                            like_count = parseInt(like_count) - 1
                            $this.removeClass("has_comment_up").addClass("comment_up")
                        }
                        // 更新点赞数据
                        $this.attr('data-likecount', like_count)
                        if (like_count == 0){
                            $this.html("赞")
                        }else{
                            $this.html(like_count)
                        }
                    }else if(resp.errno == "4101"){
                        $('.login_form_con').show();
                    }else{
                        alert(resp.errmsg)
                    }
                }
            })
        }

        if (sHandler.indexOf('reply_sub') >= 0) {
            // alert('回复评论')
            var $this = $(this);
            var news_id = $this.parent().attr("data-newsid");
            var parent_id = $this.parent().attr("data-commentid");
            var comment = $this.prev().val()

            if (!comment) {
                alert("请输入评论内容")
                return
            }

            var params = {
                "news_id": news_id,
                "comment": comment,
                "parent_id": parent_id
            }

            $.ajax({
                url: "/news/news_comment",
                type: "post",
                contentType: "application/json",
                headers: {
                    "X-CSRFToken": getCookie("csrf_token")
                },
                data: JSON.stringify(params),
                success: function (resp) {
                    if (resp.errno == "0") {
                        var comment = resp.data
                        // 拼接内容
                        var comment_html = ""
                        comment_html += '<div class="comment_list">'
                        comment_html += '<div class="person_pic fl">'
                        if (comment.user.avatar_url) {
                            comment_html += '<img src="' + comment.user.avatar_url + '" alt="用户图标">'
                        } else {
                            comment_html += '<img src="../../static/news/images/person01.png" alt="用户图标">'
                        }
                        comment_html += '</div>'
                        comment_html += '<div class="user_name fl">' + comment.user.nick_name + '</div>'
                        comment_html += '<div class="comment_text fl">'
                        comment_html += comment.content
                        comment_html += '</div>'
                        comment_html += '<div class="reply_text_con fl">'
                        comment_html += '<div class="user_name2">' + comment.parent.user.nick_name + '</div>'
                        comment_html += '<div class="reply_text">'
                        comment_html += comment.parent.content
                        comment_html += '</div>'
                        comment_html += '</div>'
                        comment_html += '<div class="comment_time fl">' + comment.create_time + '</div>'

                        comment_html += '<a href="javascript:;" class="comment_up fr" data-commentid="' + comment.id + '" data-newsid="' + comment.news_id + '">赞</a>'
                        comment_html += '<a href="javascript:;" class="comment_reply fr">回复</a>'
                        comment_html += '<form class="reply_form fl" data-commentid="' + comment.id + '" data-newsid="' + news_id + '">'
                        comment_html += '<textarea class="reply_input"></textarea>'
                        comment_html += '<input type="button" value="回复" class="reply_sub fr">'
                        comment_html += '<input type="reset" name="" value="取消" class="reply_cancel fr">'
                        comment_html += '</form>'

                        comment_html += '</div>'
                        $(".comment_list_con").prepend(comment_html)
                        // 请空输入框
                        $this.prev().val('')
                        // 关闭
                        $this.parent().hide()
                        updateCommentCount()
                    } else {
                        alert(resp.errmsg)
                    }
                }
            })
        }
    })

    // 关注当前新闻作者
    $(".focus").click(function () {

    })

    // 取消关注当前新闻作者
    $(".focused").click(function () {

    })
})

// 更新评论条数
function updateCommentCount() {
    var length = $(".comment_list").length;
    $(".comment_count").html(length + "条评论")
}