I have a situation where I need to convert numbers into scientific notation as needed. For this I am using the following:

var teste;
   if (dataPoint[1].toString().includes('e')) {
var casas = dataPoint[1].toFixed(16).split(".")[1].match(/^[0]+([1-9])/)[0].length;
teste = dataPoint[1].toFixed(casas);
yValue = parseFloat(dataPoint[1]).toFixed(casas);
                
   } else {
yValue = dataPoint[1];

}

However, toFixed() returns a string. I have already tried several solutions here on the internet but none of them work in my case.

I have already tried the following:

Number(yValue)
+yValue

and this only transforms the number already converted to scientific notation again, but I need to transform it into a number and keep it as a decimal number. For example 0.000000005 , I need to receive this as a number without js converting it to scientific notation again or to a string.