JavaScript Example of if else if: In this tutorial, we will learn how if else if works in JavaScript? Here, we are writing a JavaScript example to demonstrate the use and working of if else if in JavaScript.
status == 400) { // unable to load the document alert('Status 400 error - unable to load the document.'); } else { alert('Unexpected error!'); } } }; xmlHttpRequest.open("GET", "ajax-example.txt", true); xmlHttpRequest.send(); } Using JavaScript fetch prototype...
JavaScript function 01 02 03 04 05 06 07 08 09 10 11 12 // Global scoped variable. username = "Philip Pan"; function local() { // Local scoped variable. var username = "John Lark"; alert("Local scope variable= " + username); // Output is - John Lark } function global() { al...
-- Check that browser is not IE --> var ua = window.navigator.userAgent; if (ua.indexOf('MSIE ') > 0 || ua.indexOf('Trident/') > 0) { alert("Internet Explorer is not supported. Please use Chrome or Firefox"); } <!-- Phone script --> // The current demo needs to...
While ToDoClass is initialized, it automatically calls the constructor, which creates an alert saying "Hello World!". We can further modify our code to take advantage of ES6. In the window.addEventListener part, you can rewrite it as:
JavaScript export handlers and jqGrid initiator This is the main section of this tutorial that explains the export stuff about the jqGrid library. If you want toenable export with the Datatables library, the link has the code to download. ...
alert(response); }); Output: In the above example, we used the Apache server to host the web pages like PHP, javascript, html codes. I used HTML elements like checkboxes, labels, text boxes, etc. The HTML elements’ default classes include btn-btn-success, g-reCAPTCHA, and form-group...
return (this.indexOf(str) !== -1); }; } How to use it: var str ='javascript string contains performance. which one is best'; if(str.contains('best')) { alert("String found"); } else { alert("String not found"); }
btn2.addEventListener("click", clickBtn2); function clickBtn2() { alert("Clicked button 2"); } DOM 事件回调 TBD: 事件处理器有时候被叫做事件监听器. 监听器留意事件是否发生. 处理器就是对事件发生做出的回应。 并非只有 JavaScript 使用事件——大多的编程语言都有这种机制。JavaScript 网页上的事件机...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 confirmButton.rx.tap .subscribe(onNext: { [weak self] in self?.showAlert() }) .addDisposableTo(disposeBag) 看下官方定义 extension Reactive where Base: UIButton { /// Reactive wrapper for TouchUpInside control event. public var tap: Control...