Error TS2339: The "length" property cannot be found on the data type "never"

I'm a beginner in learning angular and typescript, and recently encountered this error:

TS2339: Property 'length' does not exist on type 'never'.

This issue arose in the following code snippet pertaining to "name.length". I aim for the function to only execute if the length of the string 'name' is equal to or greater than three characters.

processForm() {
   if(name.length >= 3){
    const allInfo = `My name is ${this.name}....`;
    alert(allInfo);
   }
}

Answer №1

In the scenario where name exists as a property or field within the component or class, it is essential to utilize this.name in place of simply name.

Answer №2

Here are a couple of things you can do to improve your code:

  1. Instead of using name, consider using this.name if it's a class variable.
  2. Make sure to add a check for the existence of variables like this:

    processForm() {
      if(name && name.length>=3){
        const allInfo = `My name is ${this.name}....`;
        alert(allInfo);
      }
    }
    

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