我在AngularJS中有一个组件(称为histogram),该组件使用ChartJS显示数据图表。

由另一个组件(称为cryostat)使用以下代码进行调用:

<div id="outer_pressure">Outer pressure ABS:<br/><a href="#!/histogram/PT0104"><span class="value">{{ $ctrl.PT0104[0].Mnish | number: 2 }} bar</span></a><br/>Outer pressure Diff:<br/><a href="#!/histogram/PT0105"><span class="value">{{ $ctrl.PT0105[0].Mnish | number: 2 }} mbar</span></a></div>


默认情况下,它使用elemId(在本示例中为PT0104)从数据库中调用此元素的数据,并加载最近3天的数据。

我的URL格式如下:http://server/np04-slow-control/app/#!/histogram/PT0104/3

我想要做的是在histogram组件页面上具有按钮,这些按钮将允许将图表加载到不同时间跨度(最后一天,过去3天,过去7天等)中的数据。

更新
根据建议更正了组件代码

更新2
改写该问题以使其更清楚。

我的HTML模板代码如下:

<style type="text/css">
     #chart-container {
         width: 80%;
         height: 100%;
     }
</style>

<div id="timespan" style="position: relative; left: 5%; top: 10%;">
    <span>History for:</span>

    <a class="btn" id="1day" href="#!/histogram/elemId/1">1 day</a>
    <button id="3days" onclick="#!/histogram/elemId/3">3 days</button>
    <button id="7days" onclick="#!/histogram/elemId/7">7 days</button>
    <button id="all"  onclick="#!/histogram/elemId/10">10 days</button>
</div>
<div id="chart-container">
     <canvas id="hist"></canvas>
</div>


控制者

'use strict';
angular.module('histogram', []).component('histogram', {
    templateUrl: 'histogram/histogram.template.html',
    controller: ['$routeParams', '$http',
        function histogramController($routeParams, $http) {
            this.elemId = $routeParams.elemId;
            if ($routeParams.days != null) {
                console.log(this.days);
                this.days = $routeParams.days;
            } else {
                this.days = 3;
            }
            this.pageTitle = this.elemId;
            this.natalie = 1;
            this.TT0101 = "";
            let self = this;
            let labels = [];
            let values = [];
            $http.get("php-db-conn/histogram.conn.php?elemId=" + this.elemId + "&days=" + this.days).then(function (response) {
            let title = self.elemId;
            let respdata = response.data.records;
            for (let i in self.elemId) {
                    labels.push(moment((respdata[i].TimeStamp), "DD-MMM-YYYY hh.mm.ss.SSSSSSSSS A"));
                    values.push(respdata[i].ExactValue);
                }
                let chartdata = {
                    labels: labels,
                    datasets: [
                        {
                            label: title,
                            tension: 0,
                            pointRadius: 1,
                            backgroundColor: 'rgba(200, 200, 200, 0.001)',
                            borderWidth: 1,
                            borderColor: 'rgba(200, 200, 200, 0.75)',
                            hoverBackgroundColor: 'rgba(200, 200, 200, 1)',
                            hoverBorderColor: 'rgba(200, 200, 200, 1)',
                            data: values
                        }
                    ]
                };
                let ctx = $('#hist');

                let barGraph = new Chart(ctx, {
                    type: 'line',
                    data: chartdata,
                    options: {
                        legend: {
                            labels: {
                                fontColor: "white",
                                fontSize: 18
                            }

                        },
                        scales: {
                            xAxes: [{
                                type: "time",
                                time: {
                                    tooltipFormat: "DD/MM/YYYY HH:mm:ss",
                                    displayFormats: {
                                        millisecond: "HH:mm:ss.SSS",
                                        second: "HH:mm:ss",
                                        minute: "HH:mm",
                                        hour: "DD/MM HH:mm",
                                        day: "DD/MM/YYYY",
                                        week: "DD/MM",
                                        month: "MM YYYY",
                                        year: "YYYY"
                                    }
                                },
                                ticks: {

                                    fontColor: "white"
                                }
                            }],
                            yAxes: [{
                                ticks: {
                                    fontColor: "white"
                                }

                            }]
                        }
                    }
                });
                console.log(labels);
            });
        }
    ]
});


我想要的是获取SPAREAI并将其附加到onclick网址。我在代码中用elemId标记了id

最佳答案

看起来您在代码中重用了elemId变量:

在这里,您从routeParams获取elemId

    this.elemId = $routeParams.elemId;


在这里,您将“ this”分配给self并重新分配elemId:

    let self = this;

   let labels = [];
        let values = [];
        $http.get().then(function (response) {

        let title = self.elemId;
        self.elemId = response.data.records;   **<---- This is the problem**


现在,当您尝试访问elemIdin模板时,它不会指向“ $ routeParams.elemId”,而是指向response.data.records。在JS“ =”运算符中不会深度复制对象。在您的情况下,“ self”和“ this”都指向相同的对象引用。

希望有帮助!

关于javascript - 获取URL参数elemId并将其添加到按钮的onClick属性,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/50487484/

10-12 00:40