1. Console.log
Example:
console.log("print log")
This is going to output 'print log' on your console. So, basically, it takes a parameter, and outputs that parameter to the console. It is often used by developers for debugging. They can log useful information using this javascript function that helps them to debug their code.
2. document.write()
Example:
document.write("<p> Adding a paragraph using document.write() </p>")
has the capability to add to the HTML using javascript. In this case, it adds a new paragraph element to the html. Hence, document.write() modifies the DOM, but console.log does not.
3. alert()
Example:
alert("Hi!! This is an alert message")
alert is a pop-up message window that appears on the browser window. The appearance of the browser window is specific to a browser. It may also be sometimes used for detecting small errors that occur in javascript by putting an alert window at steps that may be causing error. This, however is not of much help. Alert can be used for passing message to the user.
explain differences for alert, console.log, document.write illustrate with examples Javascript Html
Notepad++ JavaScript Create an HTML file, using XHTML. Add JavaScript scripts to the file. Create 3 variables to hold the famous quote (NOTHING BUT THE QUOTE). My code so far. var firstQuote = "Give me a museum and I'll fill it." // I am stuck on the document.write part. How can i display it? document.write("1. Pablo Picasso says: "+firstQuote");
WEBPROG. 9. Research the JavaScript string object, and discuss the capabilities it provides. Include examples of the object’s use. 10. Create an HTML file that creates a dog object that includes a breed, name, and age. Assign values to the object, and then use an alert dialog box to display each field’s value.
This is my code so far: <!DOCTYPE html> <html> <head> <title>JavaScript is fun</title> <meta charset="utf-8" /> </head> <body> <script type ="text/javascript"> //declare a variable and store text in it var x = "JavaScript is fun"; //write the variable 5 times document.write(x + x + x + x + x); //store 5 as string in variable x x = "5"; //store 3 as string in variable y var y = "3"; //write the value x + y to the document document.write("<br>");...
Javascript program reformation A. combine three loops into one loop and REPLACE FOR LOOP with a while loop to maintain the same result <!DOCTYPE html> <html><head><title>19.7 For Loop</title> <script language="javascript"> //numbers divisible by 5 for (i=1; i<=50; i++) { if (i%5 == 0) document.write ("number divisible by five is: " + i + "<br />"); } //for document.write ("========================<br />"); //separator //odd numbers divisible by 7 for (i=1; i<=50; i++) { if ((i%7==0) && (i%2!=0)) document.write ("odd number...
HTML------------------------------------------------------CSS---------------------------------------------------WEB230 - JavaScript 1 Assignment 7 - FormsSome of these tasks would be better done in HTML or CSS but do them in JavaScript to practice whatwe have learned.1. Select the form element and save it in a variable. From here we can access all of the form fields.2. When the page loads do the following:add the password value "monkey"select the favourite city "New York"clear the textarea3. Add an event handler to the "name" field to change the background color...
So in order to make this Javascript work in html ... do i need to make a ?? How should I call it in html. function main() { var x = Number(prompt("Enter a number")); var y = Number(prompt("Enter another number")); output = "The sum of " + x + " and " + y + " is: " + (x + y); output += "\nThe product of " + x + " and " + y + " is: "...
Javascript + HTML, no JQuery please. So, Im trying to figure out how to send an alert if the value of my selection is "0". I will be using this for a validation form assignement. So if the user leaves the selection on the default "0" value I can prompt the user to pick a valid option which would be 1+. Not sure how to access this value. Example code below: <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>Form Validation</title>...
Please help me with the following requirements for JavaScript. Write a function to take a temperature value in Celsius as an argument and return the equivalent temperature in Fahrenheit, basing it on the code from Hour 2. //Original Code <!DOCTYPE html> <html> <head> <title>Fahrenheit From Celsius</title> </head> <body> <script> var cTemp = 100; // temperature in Celsius var hTemp = ((cTemp * 9) /5 ) + 32; document.write("Temperature in Celsius: " + cTemp + " degrees<br/>"); document.write("Temperature in Fahrenheit: "...
Using JavaScript, I want to make a function that will open a new alert box that will say hello first name, last name after the person logs into the sign in form. This will happen aftrer the validation function is invoked. See code below. See the welcomefunction(). <!DOCTYPE html> <html> <head> <script> //validate the login form function validateForm() { var x = document.forms["LoginForm"]["fname"].value; //set x and y to first name and last name var y = document.forms["LoginForm"]["lname"].value; if (x ==...