check this fiddle FIDDLE var limit = 5, amount = 5, lower_bound = 1, upper_bound = 10, unique_random_numbers = []; if (amount > limit) limit = amount; //Infinite loop if you want more unique //Natural numbers than existemt in a // given range while (unique_random_numbers.length < limit) { var random_number = Math.round(Math.random()*(upper_bound – lower_bound) + … Read more
s will be NaN since it was not initialized with a numerical value. undefined + x (where x is a number) is always NaN. 2 solved Interpreting Basic JavaScript results [closed]
When a click or focus event is handled by javascript, and the javascript returns false, this will make the text box appear to be disabled. Have the handler return true instead of false to allow the event to occur. solved Why form input of type text is disabled or read-only
You can fetch the ids and classes of each tr entry in your table by using the following function: /* The function that fetches the data. */ function fetchData() { var /* Create an object to store the data. */ data = {}, /* Get every ‘tr’ element of the ‘tbody’. */ elements = document.querySelectorAll(“#tbody … Read more
try this code after i==1 create new pattern inside it for (i = 3; i >= 1; i–) { /* Printing spaces */ for (j = 0; j <= 3 – i; j++) { document.write(“ ”); } /* Printing stars */ k = 0; while (k != (2 * i – 1)) { document.write(“*”); k++; } … Read more
Your question is a little vague, but for beginners in web design, you might want to use an iframe. It is a HTML tag that creates inline panel/window thing and is pretty easy to use. It looks something like this: <iframe src=”https://stackoverflow.com/questions/18302230/profile.html” width=”300″ height=”300″> <p>Text here will be displayed on a browser that doesn’t support … Read more
You have several problems with your code, neither of which has to do with accessing this. First, you have ths arguments in the wrong order in the callback. The first argument is the element, the second is the index (maybe you’re used to jQuery — it uses the opposite order in its .each() and .map() … Read more
Javascript has asynchronous operations. But, a for loop is synchronous, not asynchronous. The code you show doesn’t use any asynchronous operations, therefore it’s all synchronous. Should myfunc() execute in node and take longer, so that “end” should be invoked earlier because javascript is asynchronous? No. Nothing in myfunc() is asynchronous. That’s all synchronous code in … Read more
Arrays are 0-indexed, This means that the last element of an array is not at array.length but at array.length – 1. You’ll have to create a new array (sub-array) and then start adding elements to it. Your code should be like this: var divs = []; for (var x = 0; x < nodeArray.length; x++) … Read more
Does the following help: var currentMode = 1; var discount = 0.20; var reverseDiscount = 1/(1-discount); function togglePrices() { var prices = document.getElementsByClassName(“price”); for (var i = 0; i < prices.length; i++) { var individualPrice = prices[i].innerHTML.substring(1); if(currentMode == 1) { individualPrice = parseFloat(individualPrice) * (1-discount); } else { individualPrice = parseFloat(individualPrice) * reverseDiscount; } … Read more
Since I cannot find any pattern on the given criteria for the value of b, I suggest addressing this problem using ranges (although it is tiring). The criteria, however, fail if a > 10,000. In order to address this, I’ve added a simple “catch” of alerting the user of incorrect input, and not to continue … Read more
This question definitely has some quality problems, but here is the solution: let indexOfIgnoreCase = function(x, y) { return x.toLowerCase().indexOf(y.toLowerCase()); } Are you still learning JavaScript? The first statement in your code already returns from the entire function, so you got a bunch of dead code. solved How to make a string in javascript become … Read more
Below is the code that I came up with to solve this naively. Please feel free to ask questions as to why it works or what could be done to improve it. var calculate = function () { var arg1 = arguments[0]; if (arguments.length === 2) { return arg1 + arguments[1]; } if (arguments.length === … Read more
You can use this method **Array.prototype.shift()** It removes the first element from an array and returns that element. solved How to remove the first element from an array? [closed]
I dont know how familiar you are with CSS and JS, but you can do 2 things: 1. Use a div in the root of the body element, with position:absolute or position:fixed(Depending on your design and layout) and z-index:-100 or whatever is needed to hide it, and then use JS or jQuery to change z-index … Read more