Question

我有多个具有相同类名的类，例如我有10个具有类名test的类。我想为每个类添加新类，例如active。

所以，如果我有这个：

<div class="test"></div>
<div class="test"></div>
<div class="test"></div>
<div class="test"></div>

在页面上多次。如何将每个类添加到活动状态，因此看起来像这样

<div class="test active"></div>
<div class="test active"></div>
<div class="test active"></div>
<div class="test active"></div>

Answer 1

您可以使用addClass()

     import java.util.Arrays;
     import javafx.application.Application;
     import javafx.collections.FXCollections;
     import javafx.scene.Scene;
     import javafx.scene.chart.CategoryAxis;
     import javafx.scene.chart.NumberAxis;
     import javafx.scene.chart.XYChart;
     import javafx.scene.paint.Color;
     import javafx.stage.Stage;
     import chart.gantt_04.GanttChart.ExtraData;

     // TODO: use date for x-axis public class GanttChartSample extends Application {

@Override public void start(Stage stage) {

    stage.setTitle("Gantt Chart Sample");

    String[] machines = new String[] { "Machine 1", "Machine 2", "Machine 3" };

    final NumberAxis xAxis = new NumberAxis();
    final CategoryAxis yAxis = new CategoryAxis();

    final GanttChart<Number,String> chart = new GanttChart<Number,String>(xAxis,yAxis);
    xAxis.setLabel("");
    xAxis.setTickLabelFill(Color.CHOCOLATE);
    xAxis.setMinorTickCount(4);

    yAxis.setLabel("");
    yAxis.setTickLabelFill(Color.CHOCOLATE);
    yAxis.setTickLabelGap(10);
    yAxis.setCategories(FXCollections.<String>observableArrayList(Arrays.asList(machines)));

    chart.setTitle("Machine Monitoring");
    chart.setLegendVisible(false);
    chart.setBlockHeight( 50);
    String machine;

    machine = machines[0];
    XYChart.Series series1 = new XYChart.Series();
    series1.getData().add(new XYChart.Data(0, machine, new ExtraData( 1, "status-red")));
    series1.getData().add(new XYChart.Data(1, machine, new ExtraData( 1, "status-green")));
    series1.getData().add(new XYChart.Data(2, machine, new ExtraData( 1, "status-red")));
    series1.getData().add(new XYChart.Data(3, machine, new ExtraData( 1, "status-green")));

    machine = machines[1];
    XYChart.Series series2 = new XYChart.Series();
    series2.getData().add(new XYChart.Data(0, machine, new ExtraData( 1, "status-green")));
    series2.getData().add(new XYChart.Data(1, machine, new ExtraData( 1, "status-green")));
    series2.getData().add(new XYChart.Data(2, machine, new ExtraData( 2, "status-red")));

    machine = machines[2];
    XYChart.Series series3 = new XYChart.Series();
    series3.getData().add(new XYChart.Data(0, machine, new ExtraData( 1, "status-blue")));
    series3.getData().add(new XYChart.Data(1, machine, new ExtraData( 2, "status-red")));
    series3.getData().add(new XYChart.Data(3, machine, new ExtraData( 1, "status-green")));

    chart.getData().addAll(series1, series2, series3);           

    chart.getStylesheets().add(getClass().getResource("ganttchart.css").toExternalForm());

    Scene scene  = new Scene(chart,620,350);
    stage.setScene(scene);
    stage.show();
}

public static void main(String[] args) {
    launch(args);
}

如何将类添加到具有相同类，javascript的多个div？

1 个答案: