Regex in JavaScript for validating decimal numbers

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Try the following expression: ^\d+\.\d{0,2}$ If you want the decimal places to be optional, you can use the following: ^\d+(\.\d{1,2})?$

EDIT: To test a string match in Javascript use the following snippet:

var regexp = /^\d+\.\d{0,2}$/;

// returns true
regexp.test('10.5')

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