The KeyboardEvent.code property represents a physical key on the keyboard (as opposed to the character generated by pressing the key). In other words, this property returns a value that isn't altered by keyboard layout or the state of the modifier keys.
This property is useful when you want to handle keys based on their physical positions on the input device rather than the characters associated with those keys; this is especially common when writing code to handle input for games that simulate a gamepad-like environment using keys on the keyboard. Be aware, however, that you can't use the value reported by KeyboardEvent.code to determine the character generated by the keystroke, because the keycode's name may not match the actual character that's printed on the key or that's generated by the computer when the key is pressed.
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For example, the code returned is "KeyQ" for the Q key on a QWERTY layout keyboard, but the same code value also represents the ' key on Dvorak keyboards and the A key on AZERTY keyboards. That makes it impossible to use the value of code to determine what the name of the key is to users if they're not using an anticipated keyboard layout.
The first section of the JavaScript code establishes some variables we'll be using. shipSize contains the size of the ship the player is moving around, for convenience. position is used to track the position of the ship within the play field. moveRate is the number of pixels each keystroke moves the ship forward and backward, and turnRate is how many degrees of rotation the left and right steering controls apply per keystroke. angle is the current amount of rotation applied to the ship in degrees; it starts at 0 (pointing straight up). Finally, spaceship is set to refer to the element with the ID "spaceship", which is the SVG polygon representing the ship the player controls.
There are several ways this code can be made better. Most real games would watch for keydown events, start motion when that happens, and stop the motion when the corresponding keyup occurs, instead of relying on key repeats. That would allow both smoother and faster movement, but would also allow the player to be moving and steering at the same time. Transitions or animations could be used to make the ship's movement smoother, too.
For example, the code returned is \"KeyQ\" for the Q key on a QWERTY layout keyboard, but the same code value also represents the ' key on Dvorak keyboards and the A key on AZERTY keyboards. That makes it impossible to use the value of code to determine what the name of the key is to users if they're not using an anticipated keyboard layout.
The first section of the JavaScript code establishes some variables we'll be using. shipSize contains the size of the ship the player is moving around, for convenience. position is used to track the position of the ship within the play field. moveRate is the number of pixels each keystroke moves the ship forward and backward, and turnRate is how many degrees of rotation the left and right steering controls apply per keystroke. angle is the current amount of rotation applied to the ship in degrees; it starts at 0 (pointing straight up). Finally, spaceship is set to refer to the element with the ID \"spaceship\", which is the SVG polygon representing the ship the player controls.
The tag_hash_107 HTML element displays its contents styled in a fashion intended to indicate that the text is a short fragment of computer code. By default, the content text is displayed using the user agent's default monospace font.
QR Code is a two-dimensional version of the barcode, typically made up of black and white pixel patterns. Denso Wave, a Japanese subsidiary of the Toyota supplier Denso, developed them for marking components in order to accelerate logistics processes for their automobile production. Now, it has found its way into mobile marketing with the widespread adoption of smartphones. "QR" stands for "Quick Response", which refers to the instant access to the information hidden in the Code.
The SPJ Code of Ethics is a statement of abiding principles supported by explanations and position papers that address changing journalistic practices. It is not a set of rules, rather a guide that encourages all who engage in journalism to take responsibility for the information they provide, regardless of medium. The code should be read as a whole; individual principles should not be taken out of context. It is not, nor can it be under the First Amendment, legally enforceable.
For an expanded explanation, please follow this link.
Supporting documents
Click or tap the arrow icon anywhere it appears in the code to explore additional resources the Society’s ethics committee compiled to help people with day-to-day ethics decisions. Links will open in their own window.
The SPJ Code of Ethics is a statement of abiding principles supported by additional explanations and position papers that address changing journalistic practices. It is not a set of rules, rather a guide that encourages all who engage in journalism to take responsibility for the information they provide, regardless of medium. The code should be read as a whole; individual principles should not be taken out of context. It is not, nor can it be under the First Amendment, legally enforceable.
Sigma Delta Chi's first Code of Ethics was borrowed from the American Society of Newspaper Editors in 1926. In 1973, Sigma Delta Chi wrote its own code, which was revised in 1984, 1987, 1996 and 2014.
The Delaware Code appearing on this site is prepared by the Delaware Code Revisors and the editorial staff of LexisNexis in cooperation with the Division of Research of Legislative Council of the General Assembly, and is considered an official version of the State of Delaware statutory code. This version includes all acts enacted as of October 18, 2023, up to and including 84 Del. Laws, c. 240.
QRCode Monkey is one of the most popular free online qr code generators with millions of already created QR codes. The high resolution of the QR codes and the powerful design options make it one of the best free QR code generators on the web that can be used for commercial and print purposes.
In computing, source code, or simply code, is any collection of text, with or without comments, written using a human-readable programming language, usually as plain text. The source code of a program is specially designed to facilitate the work of computer programmers, who specify the actions to be performed by a computer mostly by writing source code.
Most application software is distributed in a form that includes only executable files. If the source code were included it would be useful to a user, programmer or a system administrator, any of whom might wish to study or modify the program.
Source code (also referred to as source or code) is the version of software as it is originally written (i.e., typed into a computer) by a human in plain text (i.e., human readable alphanumeric characters).[3]
This responds to the fact that, when program translation first appeared, the contemporary form of software production were textual programming languages, thus source code was text code while machine code was target code. However, as programming pipelines started to incorporate more intermediate forms, some in languages like JavaScript that could be either source or target, text code stopped being synonymous with source code.
Other broader interpretations, however, consider source code to include the machine code along with all the high level languages that produce it, this definition undoes the original machine/text distinction by considering each step in the program translation to be source code.
For the purpose of clarity "source code" is taken to mean any fully executable description of a software system. It is therefore so construed as to include machine code, very high level languages and executable graphical representations of systems.[6][7]
This approach allows for a much more flexible approach to system analysis, dispensing with the requirement for designer to collaborate by publishing a convenient form for understanding and modification. It can also be applied to scenarios where a designer is not needed, like DNA.However, this form of analysis does not contemplate a costlier machine-to-machine code analysis than human-to-machine code analysis.
The earliest programs for stored-program computers were entered in binary through the front panel switches of the computer. This first-generation programming language had no distinction between source code and machine code. be457b7860
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