Use match() method to Validate decimal numbers in JavaScript. Here is example code to validate decimal numbers.
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<html> <body> <script> var str = "17"; var re = /^[-+]?[0-9]+\.[0-9]+$/; var found = str.match( re ); alert("decimal" ); </script> </body> </html> |
Output:
Regex in JavaScript for validating decimal numbers
Use the following expression as below example code.
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<html> <body> <script> var regexp = /^\d+\.\d{0,2}$/; // returns true var res = regexp.test('10.5') alert(res); </script> </body> </html> |
Output:
Do comment if you have any questions and suggestions on this topic.
Note: The All JS Examples codes are tested on the Safari browser (Version 12.0.2) and Chrome.
OS: macOS 10.14 Mojave
Code: HTML 5 Version
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