math – Javascript, What does the ^ (caret) operator do?-ThrowExceptions

Exception or error: I have some javascript code: <script type=”text/javascript”> $(document).ready(function(){ $(‘#calcular’).click(function() { var altura2 = ((($(‘#ddl_altura’).attr(“value”))/100)^2); var peso = $(‘#ddl_peso’).attr(“value”); var resultado = Math.round(parseFloat(peso / altura2)*100)/100; if (resultado > 0) { $(‘#resultado’).html(resultado); $(‘#imc’).show(); }; }); }); </script> What does the ^ (caret) operator mean in Javascript? How to solve: The ^ operator is the …

javascript – CORS error on same domain?-ThrowExceptions

Exception or error: I’m running into a weird CORS issue right now. Here’s the error message: XMLHttpRequest cannot load http://localhost:8666/routeREST/select?q=[…] Origin http://localhost:8080 is not allowed by Access-Control-Allow-Origin Two servers: localhost:8666/routeREST/ : this is a simple Python Bottle server. localhost:8080/ : Python simpleHTTPserver where I run y Javascript application. This app is executing Ajax requests on …

javascript – Angular Directive refresh on parameter change-ThrowExceptions

Exception or error: I have an angular directive which is initialized like so: <conversation style=”height:300px” type=”convo” type-id=”{{some_prop}}”></conversation> I’d like it to be smart enough to refresh the directive when $scope.some_prop changes, as that implies it should show completely different content. I have tested it as it is and nothing happens, the linking function doesn’t even …

javascript – How to get the background color code of an element in hex?-ThrowExceptions

Exception or error: How do I get the background color code of an element? console.log($(“.div”).css(“background-color”)); <script src=”https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> <div class=”div” style=”background-color: #f5b405″></div> What I want #f5b405 How to solve: Check example link below and click on the div to get the color value in hex. var color = ”; $(‘div’).click(function() { var x = $(this).css(‘backgroundColor’); hexc(x); …

How to detect when a tab is focused or not in Chrome with Javascript?-ThrowExceptions

Exception or error: I need to know if the user is currently viewing a tab or not in Google Chrome. I tried to use the events blur and focus binded to the window, but only the blur seems to be working correctly. window.addEventListener(‘focus’, function() { document.title = ‘focused’; }); window.addEventListener(‘blur’, function() { document.title = ‘not …