I'm trying to create a function that uses percentage to get a number. The idea is to have something like this: 0%: 100px 50%: 200px 75%: 210px
So when I run my function at a percentage like 25% it blends 0 and 50 together, same for above 50%.
It sounds kind of complicated, the overall idea is to create something using JS only that will ease the numbers going from 0 to 100%
I've tried using regular percentage calculation, yet it doesn't really work for 3 or more variables.
So if you don't mind I've taken the liberty of turning your percentage into a JSON object:
let input = {
0: 100,
50: 200,
75: 210,
};
We can then do something like this if we assume percentages are always whole numbers:
let output = {};
let previous = null;
// for each whole percent
for(let keyPercent in input)
{
// cast to number
let currPercent = parseFloat(keyPercent);
// get value of percent
let currValue = input[currPercent];
if (currValue != null) { // if value is present
if (previous != null) { // and previous value is not null
// find the step size (valDiff) / (percentDiff)
let step = (currValue - previous.value) / (currPercent - previous.percent);
// count to multiply by step
let count = 0;
// this produces the percent value for every step between previous.percent and currPercent
for (let prevPercent = previous.percent; prevPercent <= currPercent; prevPercent += 1) {
output[prevPercent] = previous.value + (step * count);
count += 1;
}
}
// set previous value
previous = { percent: currPercent, value: currValue };
}
}
console.log(output);
this outputs something along the lines of:
0: 100
1: 102
2: 104
...
48: 196
49: 198
50: 200
51: 200.4
52: 200.8
...
73: 209.2
74: 209.6
75: 210
Let me know if you need any clarification.
Note: comments are made in code
