Conversion from Decimal to octal, binary and hexadecimal in javascript

Question

I have a form where a user enters a decimal number and then from the dropdown menu he chooses if he wants to convert it either to binary, octal or hexadecimal by clicking on a c

Answer 1

you can directly convert your values to binary and octal and hexadecimal like this

function Answer() {

    if (document.getElementbyId ('selectid').value=="binary") {
        this.value = this.value.toString(2);
    }
    else if  (document.getElementbyId ('selectid').value=="octal") {
        this.value = this.value.toString(8);
    }
    else if  (document.getElementbyId ('selectid').value=="hexadecimal") {
        this.value = this.value.toString(16);
    }
}