How do I pass C# variable in JS

Question

I want to create a chart and compare 2 values, I a using ChartJs .. now the issue is how do i pass the Binded result variable to the js , what i mean is how to remove the static values from chart and provide the c# values..

my blazor variables are PreMoney Value & PostMoney Value and how should I pass the PreMoney Value & Post Money Value in data:[]

 window.chartJs = () => {
    var ctx = document.getElementById('myChart');
    var myChart = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
            datasets: [{
                label: '# of Votes',
                **data: [12, 19, 3, 5, 2, 3],**
                backgroundColor: [
                    'rgba(255, 99, 132, 0.2)',
                    'rgba(54, 162, 235, 0.2)',
                    'rgba(255, 206, 86, 0.2)',
                    'rgba(75, 192, 192, 0.2)',
                    'rgba(153, 102, 255, 0.2)',
                    'rgba(255, 159, 64, 0.2)'
                ],
                borderColor: [
                    'rgba(255, 99, 132, 1)',
                    'rgba(54, 162, 235, 1)',
                    'rgba(255, 206, 86, 1)',
                    'rgba(75, 192, 192, 1)',
                    'rgba(153, 102, 255, 1)',
                    'rgba(255, 159, 64, 1)'
                ],
                borderWidth: 1
            }]
        },
        options: {
            scales: {
                yAxes: [{
                    ticks: {
                        beginAtZero: true
                    }
                }]
            }
        }
    });
    var myVentureChart = new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ['PreMoney Value', 'PostMoney Value'],
            datasets: [{
                label: '# of Votes',
                data: [12, 19],
                backgroundColor: [
                    'rgba(255, 99, 132, 0.2)',
                    'rgba(54, 162, 235, 0.2)'
                    
                ],
                borderColor: [
                    'rgba(255, 99, 132, 1)',
                    'rgba(255, 159, 64, 1)'
                ],
                borderWidth: 1
            }]
        },
        options: {
            scales: {
                yAxes: [{
                    ticks: {
                        beginAtZero: true
                    }
                }]
            }
        }
    });
 };

Answer 1

In your Blazor page:

@inject IJSRuntime jsRunTime;

<div id="chartdiv"></div>

<button @onclick="CreateChart">Create Chart</button>

@code {
   private async Task CreateChart()
   {
      await jsRunTime.InvokeVoidAsync("YourJavaScriptFunction", preMoney,  postMoney);
   }
}

In your JavaScript:

function YourJavaScriptFunction(preMoney, postMoney) {
   ...
}