Parsing_ Benchmarking And Logging — Part 2 MCQs with Explanations

The function stopTimeLogging() is used to stop the time logging.

JavaScript has lexical scoping based on functions but not blocks.

When type is “file”, this property is a comma-separated list of MIME types that specify the types of files that may be selected. The strings “audio/*”, “video/*”, and “image/*” are also legal. Mirrors the accept attribute.

The width property is used to retrieve or store the number of pixels per row of data.

This method removes node from whatever document it is currently part of and changes its ownerDocument property to this document, making it ready for insertion into this document.

The method importNode() copies a node from another document without removing it.

The comment node can be created using the method Comment createComment(string data) .

When you have created and initialized an synthetic event object, you can dispatch it using the dispatchEvent() method of EventTarget.

The command can be executed using boolean execCommand(string commandId, [boolean showUI, [string value]]).

Whenever someone creates a new field in Craft, they must specify what type of field it is.

The method getInputHtml() returns a fieldtype’s input HTML.

The method getInputHtml(0 accepts two arguments: $name and $value. $name is the name you should assign your HTML input’s name= attribute, and $value is the field’s current value (either from the DB, or the POST data if there was a validation error).

If you need to do any processing on your settings’ post data before they’re saved to the database’s content table, you can do it with the prepSettings() method.

The parameter $name is the name you should assign your HTML input’s name= attribute.

The defineSettings() method returns an array whose keys define the setting names, and values define the parameters (the type of value, etc.).

The parameter $value is the field’s current value (either from the DB, or the POST data if there was a validation error).

If your fieldtype is storing data in its own table, and doesn’t have any use for a column within the main content table, you may also set defineContentAttribute() to return false.

BaseFieldType provides three events that you can latch code onto: 1. onBeforeSave() : Called right before a field is saved. 2. onAfterSave() : Called right after a field is saved, and $this->model->id is set. 3. onAfterElementSave() : Called right after an element is saved, and $this->element->id is set.

The method onBeforeSave() is called right before a field is saved.

loglevel is a JavaScript logging library that is reliable and extremeley easy-to-use over the various console.log() methods.

loglevel is a lightweight, minimal and convenient JavaScript logging library which provides a reliable and extremely easy-to-use layer over the various console.log() methods that are often available, with none of their downsides. loglevel makes these methods safe to use by gracefully handling the cases where they don’t exist, and also lets you filter the output of these, to only show messages at warn level or above, for example. This level is persisted in cookies (if available, safely handling non-browser environments too). loglevel doesn’t try and go beyond this, instead just sticking to the core fundamentals of logging with no frills.

Since a major use of JavaScript logging is in browser testing, log4javascript is tested and works across all recent major browsers, including : 1. Internet Explorer 5+ for Windows 2. Mozilla, Firefox, Netscape 3. Google Chrome 4. Safari 1.3+ 5. Opera 7.5+ 6. WebKit 7. Konqueror 3.4+

log4javascript is a fully-featured, easy-to-use JavaScript logging framework based on the Java logging framework log4j. Its purpose is to provide JavaScript developers with a familiar, robust and flexible logging framework with which to debug JavaScript applications.

Lumberjack is a javascript logging framework that includes a sexy logging pane/console that stays at the bottom of the page. You can toggle the pane.

jsTracer is a simple yet feature rich JavaScript logging and debugging tool. It is especially useful for debugging what has been coined “Web 2.0” code.

Log Hound is a standalone JavaScript logging utility that allows you to log messages during execution of JavaScript code. The log messages are stored and are viewable via the logging user interface which allows you to search the messages using multiple cooperative criteria) Log messages can be categorized by severity and by tags that can be associated with the messages when they are logged.

There are several ways to log using “appender”s. The current available Appenders are: 1. DummyAppender: log nothing. 2. ConsoleAppender: open a new window in the browser or an inline div element and insert log messages in real time. 3. WindowsEventAppender: send log messages in the MS Windows event manager (Internet Explorer only). 4. FileAppender: write log messages in a local file on the client (IE and Mozilla). 5. AjaxAppender: allow to send log messages to a remote server with asynchronous HTTP request. 6. MetatagAppender: add log messages as meta data. 7. JavaScript Console Appenders for Opera, Mozilla and Safari.

If you use .Net, JSNLog has server side extensions that receive log data from the browser and have it logged on the server. And it lets you configure your loggers in your web.config.