JavaScript SyntaxError: Invalid shorthand property initializer

To fix JavaScript SyntaxError: Invalid shorthand property initializer, correct the value assignments made to properties of objects. Colon (:) is used for assigning values to properties of objects. Most of the developers type in assignment operator EqualTo(=) instead of Object Initializer (:), which causes SyntaxError.

Example

Following example reproduces the SyntaxError, and we shall correct the same.

index.html

<!doctype html>
<html>
<body>
	<h1>JavaScript - SyntaxError: Invalid shorthand property initializer</h1>

	<script>
            var msg = "";
      
            var mango = [type="fruit", native="India"];
      
            console.log(mango.type);
	</script>
</body>
</html>
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Output would be

Uncaught SyntaxError: Invalid shorthand property initializer
    at render (javascript-editor.php?file=test:126)
    at submitCode (javascript-editor.php?file=test:149)
    at HTMLButtonElement.onclick (javascript-editor.php?file=test:68)

The bug here is the line:10 var mango = [type=”fruit”, native=”India”]; .

The correct one is  var mango = [type:”fruit”, native:”India”]; where we replaced=  with: .

index.html

<!doctype html>
<html>
<body>
	<h1>JavaScript - SyntaxError: Invalid shorthand property initializer</h1>

	<script>
            var msg = "";
      
            var mango = [type:"fruit", native:"India"];
      
            console.log(mango.type);
	</script>
</body>
</html>
Try Online

Try Online

Conclusion

In this JavaScript Tutorial, we learned about using Object Assignment Operator, Colon (:) while assigning values to properties of Objects, resolves JavaScript SyntaxError: Invalid shorthand property initializer.