Results update in real-time as you type. How a custom function is defined in code. Do you know of a WYSIWYG equation editor like DragMath implemented in javascriptmathml or Flash.
Sample spreadsheet that uses an array expression formula.
A JavaScript function is defined with the function keyword followed by a name followed by parentheses. To use this tool choose File Make a copy. In the above snippet were listening for a click event on the element with a class of calculator-keysSince all the keys on the calculator are children of this element the click event filters down to them too. Inside the callback function of the event listener we extract the target property of the click event using destructuring assignment which makes it.