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Get global variable dynamically by name string in JavaScript?
Display in alert by using alert(window()). Following is the syntax −
alert(window['yourVariableName' + 'yourVariableName' + otherVariableName]);
Example
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css"> <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script> </head> <body> <script> var globalVariablelocal_print100=100; print100=1; alert(window['globalVariable' + 'local_' + print100]); </script> </body> </html>
To run the above program, save the file name anyName.html(index.html) and right click on the file and select the option open with live server in VS code editor.
Output
Updated on: 16-Jul-2020
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