What are common compatibility issues with using JavaScript in different browsers, specifically Opera?

One common compatibility issue with using JavaScript in different browsers, specifically Opera, is the handling of certain CSS properties. To solve this, you can use feature detection to check if a specific property is supported by the browser before applying it. 

if (window.CSS.supports('display', 'grid')) {
  // Apply grid layout
} else {
  // Apply fallback layout
}

Keywords

JavaScript browser compatibility Opera cross-browser compatibility issues

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