Since val is decreasing by 1 each time it meets the criteria of being smaller than 10, your code will get stuck in an infinite loop since val will always be smaller than 10.
What happens when a property on an element has no value supplied is governed by style inheritance. A property should inherit its value from its parent element, according to this specification.
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Quick Access Toolbar is a customizable toolbar that is displayed in Microsoft Excel, Microsoft Word, and other Office products.
It appears in the top left corner of the window by default.
QAT provides with quick access to frequently used features e.g. the Save, Undo, Redo features.
When you click on the drop down menu of QAT, it allows you to customize QAT. This enables you to add and remove the commands that are displayed in the toolbar. These are default commands however, it allows you to add your own commands. You can add commands to the QAT that you frequently use. You can import or export these modifications.
For example Excel Quick Access Toolbar contains only 3 buttons by default Save, Undo and Redo.