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Javascript Articles
Page 451 of 534
Is there any way of moving to HTML 5 and still promise multi browser compatibility?
Yes, follow this approach −Move to the HTML5 doctype − Use or even the new elements like Or the newer HTML5 tags or , you can still use the outdated tag.The controls have backward compatibility too. The works the same as in browsers that do not support it.However, if you are working t for legacy Internet Explorer, then use html5shiv. It enables the use of HTML5 sectioning elements in legacy Internet Explorer.
Read MoreHow to get a key/value data set from a HTML form?
To get a key/ value data set from a HTML form, use jQuery.Let us say this is our HTML − For JS −var data = $('form#form1’).serializeArray(); // [{'demo: 'value'}] $.ajax({ data: data });
Read MoreHow to put the WebBrowser control into IE9 into standards with HTML?
To place the WebBrowser control into IE9 standards, you need to add the following line in your HTML web page −You can also try this for Internet Explorer 9 −You can also try this for Microsoft Edge −
Read MoreHTML5 Input type=number removes leading zero
The leading zero issues may arise when you want to add an international phone number.To solve this −On iOS, the numeric keyboard appears with only numbers.On Android phones, the "tel" is rightly interpreted but not the pattern.You can also use −
Read MoreSetting null values with an HTML <select> using AngularJS.
To set null values, here is the controller −function display($scope) { $scope.obj ={"selected":null}; $scope.objects = [{id: 1, value: "Yes"}, {id: 0, value: "No"}] }The following is the template − Unknown {{obj}}
Read MoreIs there a Microsoft equivalent for HTML5 Server-Sent Events?
To achieve your goal for HTML5 Server-Sent Events −Try polyfillIt would work for IE10 and IE11 as well. It starts with −if ("EventSource" in global) return;It only runs in web browsers that do not support EventSource.Refer the following GitTry websockets Works for IE10 and IE 11 and it also provides bi-directional communication options.
Read MoreClient-side image processing with HTML
For client-side processing and uploading, you can try to run the following code −
Read MoreWhat exactly is the pushState state object in HTML?
Use the pushSate object to update the page when the user navigates back through history. Let us see an example to include the selected color that creates a history entry −function display(color) { var myState = { selectedColor: color }, myTitle = "Page title", myPath = "/" + color; history.pushState(myState, myTitle, myPath ); };Now we will use the popstate event to update the selected color −$(window).on('popstate', function(event) { var myState = event.originalEvent.state; if (statemyState { selectColor( myState.selectedColor ); } });
Read MoreHow to reconnect to websocket after close connection with HTML?
Recreate the socket to reconnect it. The websockets are designed to stay open. You can also go with the method to have the server close the connection. Through this, the websocket will fire an onclose event and would amazingly continue attempting to make the connection.In addition, when the server is listening again the connection will be automatically reestablished.ExampleYou can try to run the following code to reconnect to WebSocket −// Socket Variable declaration var mySocket; const socketMessageListener = (event) => { console.log(event.data); }; // Open const socketOpenListener = (event) => { console.log('Connected'); mySocket.send('hello'); }; // Closed ...
Read MoreHow to actually work with HTML5 Canvas camera/viewport?
For viewport usage, use the drawImage() method.ctx.clearRect(0,0,game.width,game.height); // a full background image ctx.drawImage(background,cropLeft,cropTop,cropWidth,cropHeight, 0,0,viewWidth,viewHeight);For the game −var myGame = document.getElementById("game"); var myCtx= myGame.getContext("2d"); myCtx.clearRect(0,0,game.width,game.height); // using drawImage() method myCtx.drawImage(background,left,top,350,250,0,0,250,150); myCtx.beginPath(); myCtx.arc(130,80,12,0,Math.PI*2,false); myCtx.closePath(); myCtx.fill(); myCtx.stroke();
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