setSrcCount --;if(setSrcCount ===0) {functionsaveCanvas(){//function to save canvas as a Image done through ajax to phpconsole.log("AfterSaving"); }saveCanvas();console.log("End"); } } } } The code can be made more readable if you usePromises: functionsetSrc(i...
onkeydown = function(e){ e.preventDefault(); } Fiddle Demo As pointed out by nnnnnn, onkeydown is a better option than onkeypress as it would stop the delete and backspace key functions. You could add the below also to your code to nullify Cut and Paste events1. (Note: Not doing...
the most common example of which is reaching into the DOM to grab a specific element to interact with. It’s a fact of JavaScript that you’ll have to do this, and you shouldn’t feel bad about reaching outside of your function. Instead, carefully...
Modules in TypeScript are the equivalent of namespaces in the .NET Framework. They’re a great way to organize your code and to encapsulate business rules and processes that would not be possible without this functionality (JavaScript doesn’t have a built-in way to provide this function). Th...
The problem of global variables is well documented in JavaScript—the language makes it trivial to store data globally where all functions can access it. This is a common source of bugs, too, because anything could have changed the value of a global variable, and hence the function could now...
The following code example shows a scriptable OnClick property. [ScriptableMemberAttribute] public EventHandler OnClick { get { return _onClick; } set { _onClick = onClick;} } You can assign a JavaScript function to this property so that JavaScript code can call it, as shown in the follo...
JavaScript // Modern browsers if (document.querySelector) { var links = document.querySelectorAll('#menu li a'); for (var i = 0; i < links.length; i++) { links.addEventListener('mouseover', function() { this.style.color = 'red'; ...
javascript // AJAX request using JavaScript and PHP let xhr =newXMLHttpRequest(); xhr.open("GET","api/data.php",true); xhr.onreadystatechange=function(){ if(xhr.readyState===4&&xhr.status===200){ let response = JSON.parse(xhr.responseText); ...
JavaScript // CloudScriptlog.info(responseString); The response back to the client at the end of running the CloudScript might look like this example provided below. JSON //HTTP Response {"code":200,"status":"OK","data": {"FunctionName":"MyScript","Revision":23,"FunctionRe...
function alertFoo() { alert(foo); } </script> <body> <button onClick="alertFoo()"> What is foo? </button> <p><button onClick="helloFromJS('Hi.')"> Call helloFromJS() function. </button></p> </body> </html> When accessing the JavaScript context of a loading document, you...