Note: I tried using d3js but I accept any other usage model, getting the expected value any method will be positive for me.
Example to file ./Lista_de_Jogos.csv:
a,b,c,d,e,1
f,g,h,i,j,2
I would always like to collect the last value of the CSV regardless of its size, in this example the value would be:
2
My attempt was:
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/7.1.1/d3.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/d3-fetch@3"></script>
<script>
function lastvalue() {
let lastvalue = d3.csv("./Lista_de_Jogos.csv");
var lastvaluelast = lastvalue.substr(lastvalue.lastIndexOf(',') + 1);
console.log("Last Value: ", {lastvaluelast})
}
</script>
But I can't get the return of the value, how should I proceed to receive such value?
I've already searched on stackoverflow and couldn't find an example for Javascript/HTML
You need to wait for the promise to resolve. Use then:
function lastvalue() {
d3.csv("./list.csv").then(result => {
console.log('result:', result)
const lastRow = result[result.length - 1]
console.log('lastRow:', lastRow)
const lastValue = lastRow[result.columns[result.columns.length - 1]]
console.log('lastValue:', lastValue)
});
}
lastvalue()