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Exercise 1.1 - Buttons and Inputs

g) Math and libraries

This is the console. All output created with writeLog() is shown here.

Please type two numbers and press "Calculate power". I will calculate taking the first to the power of the second number.

script.js

This is the JavaScript code behind the above application.

/* global writeLog, getInput */
writeLog("Solution for exercise 1.1 f)");
function power() {
    // Get the base from the input field
    var base = getInput("base");
    var exponent = getInput("exponent");
    // Make it numbers
    base = parseFloat(base);
    exponent = parseFloat(exponent);
    // If base or exponent is not a number, exit
    if(isNaN(base) || isNaN(exponent)) {
        writeLog("Ooop, one of the two isn't a number!")
        return;
    var result = Math.pow(base, exponent);
    writeLog(base + " to the power of " + exponent + " is " + result.toFixed(2));
    // Clear the input fields
    document.getElementById("base").value = "";
    document.getElementById("exponent").value = "";

	/* global writeLog, getInput */
	writeLog("Solution for exercise 1.1 f)");

	function power() {
	// Get the base from the input field
	var base = getInput("base");
	var exponent = getInput("exponent");

	// Make it numbers
	base = parseFloat(base);
	exponent = parseFloat(exponent);

	// If base or exponent is not a number, exit
	if(isNaN(base) \|\| isNaN(exponent)) {
	writeLog("Ooop, one of the two isn't a number!")
	return;
	}

	var result = Math.pow(base, exponent);

	writeLog(base + " to the power of " + exponent + " is " + result.toFixed(2));

	// Clear the input fields
	document.getElementById("base").value = "";
	document.getElementById("exponent").value = "";
	}