The argument supplied in Angular using TypeScript is incompatible: a 'string' type cannot be assigned to a parameter expecting an 'Element' type

I'm facing 3 errors with Typescript in angular when working with D3js elements. I tried to create a mouseover event to display tag and value data corresponding to the bar graph, but encountered issues. I attempted declaring strings and even added "noImplicitAny: false" to the tsconfig.js file. I'm currently troubleshooting to identify the problem area. See below for the code snippet:

 // object.enteries: creates arrays of an element 
svg.selectAll("bars")
  .data(sortedata)
  .enter()
  .append("rect")
  .attr('x', function(d):any {return xAxis(d[0])})
  .attr('y', function(d){return yAxis(Number(d[1]))} )
  .attr('width', xAxis.bandwidth())
  .attr("height", (d) => this.height - yAxis(Number(d[1])))
  .attr("fill", "#d04a35")
  .on('mouseover', mouseover)
  
const tip = d3.select(".tooltip")

function mouseover(event,d){
tip
style('left', `${event.clientX + 15}px`)
style('top' , `${event.clientX + 15}px`)
style('opacity', 0.88)

tip.select("h3").html("tag:" +d[0]),
tip.select("h4").html("value:" +d[1]);
}

You can also view the errors visually here.

javascriptangulartypescript

Answer №1

I think it's important to add a . before the style keyword in this scenario.

suggestion
.style('left', `${event.clientX + 15}px`)
.style('top' , `${event.clientX + 15}px`)
.style('opacity', 0.88)

That being said, if you prefer to set multiple styles simultaneously, the d3 documentation provides an example

If you want to apply several style properties all at once, consider using an object literal. For instance: 

selection.style({fill: "blue", "font-size": "16px"});

Documentation Reference

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