I want to display data last 7 days with date wise in chartjs?

To generate the labels for your chart with the dates for the last 7 days (including the current day), you can use the Date object in JavaScript to generate the dates. Here’s an example of how you can modify your code to do that:

    // Generate the labels for the chart
var labels = [];
var today = new Date();
for ( var i = 0; i < 7; i++ ) {
    // Generate the date for each label by subtracting the number of days from the current date
    var date = new Date( today.getFullYear(), today.getMonth(), today.getDate() - i );
    labels.push( date.toDateString() );
}

// Use the generated labels in the chart
var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
    // The type of chart we want to create
    type: 'line',

    // The data for our dataset
    data: {
        labels: labels, // Use the generated labels here
        datasets: [
            {
                label: 'My First dataset',
                backgroundColor: 'rgb(255, 99, 132)',
                borderColor: 'rgb(255, 99, 132)',
                data: [0, 10, 5, 2, 20, 30, 45]
            },
            {
                label: 'My Second dataset',
                backgroundColor: 'rgb(255, 43, 122)',
                borderColor: 'rgb(255, 45, 122)',
                data: [0, 20, 3, 4, 30, 40, 41]
            }
        ]
    },

    // Configuration options go here
    options: {}
});

This code will generate an array of labels with the dates for the last 7 days (including the current day) in the format dayOfWeek month dayOfMonth year, and use that array as the labels for the chart.

Note: The Date object in JavaScript uses a zero-based index for months (0 for January, 1 for February, etc.), so make sure to subtract 1 from the month when generating the dates.