[Solved] check if a value is string in an object javascript

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Here’s an approach that might be easier to understand.

This code logs an error if one or more properties are not a string:

var obj = {
  "val1": "test1",
  "val2": 1,
  "val3": null
};

for (var property in obj) {
  if (typeof obj[property] !== 'string') {
    console.error(property + ' is not a string!');
  }
}

PS: You had some errors in your code:

  • Don’t add a comma after the last property, it may lead to errors
  • You have overwritten the same property over and over again
  • You where missing a semicolon after the closing curly bracket of your object, may also lead to errors

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solved check if a value is string in an object javascript