number_converter_vanilla_javascript/script.js at master · Khokon9363/number_converter_vanilla_javascript · GitHub

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// parseFloat(num, base) used for convert number any to decimal
// num.toString(base) used for convert number decimal to any
// toUpperCase used for capitalized the converted values. Also convert my Hex when I type and when I receive the result
// It will be more interesting , If i add regex in switch

let d = document.getElementById("d"),
    b = document.getElementById("b"),
    o = document.getElementById("o"),
    h = document.getElementById("h")
    m = document.getElementById("m")
    l = document.getElementById("l")

    function calculate(val, base, which) {
        if (val.length === 0) {
            d.value = null,
            b.value = null,
            o.value = null,
            h.value = null
            m.value = null
            l.value = null
            return
        }
        let inputtedVal = parseFloat(val, base) // decimal value

        // results
        switch(which) {
            case 'b':
                d.value = inputtedVal.toString(10).toUpperCase()
                o.value = inputtedVal.toString(8).toUpperCase()
                h.value = inputtedVal.toString(16).toUpperCase()
                m.value = Math.floor((b.value / Math.pow(10, b.value.toString().length - 1 )) % 10)
                l.value = b.value % 10
            break

            case 'o':
                d.value = inputtedVal.toString(10).toUpperCase()
                b.value = inputtedVal.toString(2).toUpperCase()
                h.value = inputtedVal.toString(16).toUpperCase()
                m.value = Math.floor((b.value / Math.pow(10, b.value.toString().length - 1 )) % 10)
                l.value = b.value % 10
            break

            case 'h':
                d.value = inputtedVal.toString(10).toUpperCase()
                b.value = inputtedVal.toString(2).toUpperCase()
                o.value = inputtedVal.toString(8).toUpperCase()
                m.value = inputtedVal.toString(8).toUpperCase()
                l.value = inputtedVal.toString(8).toUpperCase()
            break

            default:
                b.value = inputtedVal.toString(2).toUpperCase()
                o.value = inputtedVal.toString(8).toUpperCase()
                h.value = inputtedVal.toString(16).toUpperCase()
                m.value = Math.floor((b.value / Math.pow(10, b.value.toString().length - 1 )) % 10)
                l.value = b.value % 10
        }
    }