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Immediately invoked function expressions can be used to avoid variable hoisting from within blocks, protecting against polluting the global environment and simultaneously allowing public access to methods while retaining privacy for variables defined within the function. In other words, it wraps functions and variables, keeping them out of the ...
Function declarations, which declare a variable and assign a function to it, are similar to variable statements, but in addition to hoisting the declaration, they also hoist the assignment – as if the entire statement appeared at the top of the containing function – and thus forward reference is also possible: the location of a function ...
Server-side image maps enable the web browser to send positional information to the server about where the user clicks within an image. This allows the server to make pixel-by-pixel decisions about what content to return in response (possible methods are to use image mask layers, database queries, or configuration files on the server).
A Node-RED flow describes the connection and sequencing of various input, output, and processing nodes within the Node-RED platform. Each node within a flow performs a unique and specific task. When data is transmitted to a node, the node processes it according to its designated function, before passing it on to the subsequent node in the flow.
This is needed in order to get the url and size information about a thumbnail of the new image, which is then displayed in the success message. If the user has chosen to overwrite an existing file and has also added new data for the description page, the page content is sent off as a separate API edit request, because the standard upload action ...
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In HTML, a file-select control is a component of a web form with which a user can select a local file. When the form is submitted (perhaps together with other form data), the file is uploaded to the web server.
• Display Name Enter the name you want displayed when you send an email. • Sending Choose how you want your sent messages checked: • Select if you want messages checked for spelling before sending. • Select if you want email addresses automatically added to contacts. • Select if you want a sent confirmation to appear on a separate page.