---
source: crates/biome_js_analyze/tests/spec_tests.rs
expression: invalid.jsx
---
# Input
```jsx
//Duplicate `name` property
<Hello name="John" name="John" />;

//Case where property is repeated more than twice
<Hello name="John" name="John" name="John" />;

//Case with two duplicates
<Hello name="John" name="John" lastname="Doe" lastname="Doe" />;

<label xml:lang="en-US" xml:lang="en-US"></label>

```

# Diagnostics
```
invalid.jsx:2:8 lint/suspicious/noDuplicateJsxProps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This JSX property is assigned multiple times.
  
    1 │ //Duplicate `name` property
  > 2 │ <Hello name="John" name="John" />;
      │        ^^^^^^^^^^^
    3 │ 
    4 │ //Case where property is repeated more than twice
  
  i This attribute is assigned again here.
  
    1 │ //Duplicate `name` property
  > 2 │ <Hello name="John" name="John" />;
      │                    ^^^^^^^^^^^
    3 │ 
    4 │ //Case where property is repeated more than twice
  

```

```
invalid.jsx:5:8 lint/suspicious/noDuplicateJsxProps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This JSX property is assigned multiple times.
  
    4 │ //Case where property is repeated more than twice
  > 5 │ <Hello name="John" name="John" name="John" />;
      │        ^^^^^^^^^^^
    6 │ 
    7 │ //Case with two duplicates
  
  i This attribute is assigned again here.
  
    4 │ //Case where property is repeated more than twice
  > 5 │ <Hello name="John" name="John" name="John" />;
      │                    ^^^^^^^^^^^
    6 │ 
    7 │ //Case with two duplicates
  
  i This attribute is assigned again here.
  
    4 │ //Case where property is repeated more than twice
  > 5 │ <Hello name="John" name="John" name="John" />;
      │                                ^^^^^^^^^^^
    6 │ 
    7 │ //Case with two duplicates
  

```

```
invalid.jsx:8:8 lint/suspicious/noDuplicateJsxProps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This JSX property is assigned multiple times.
  
     7 │ //Case with two duplicates
   > 8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
       │        ^^^^^^^^^^^
     9 │ 
    10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
  
  i This attribute is assigned again here.
  
     7 │ //Case with two duplicates
   > 8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
       │                    ^^^^^^^^^^^
     9 │ 
    10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
  

```

```
invalid.jsx:8:32 lint/suspicious/noDuplicateJsxProps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This JSX property is assigned multiple times.
  
     7 │ //Case with two duplicates
   > 8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
       │                                ^^^^^^^^^^^^^^
     9 │ 
    10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
  
  i This attribute is assigned again here.
  
     7 │ //Case with two duplicates
   > 8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
       │                                               ^^^^^^^^^^^^^^
     9 │ 
    10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
  

```

```
invalid.jsx:10:8 lint/suspicious/noDuplicateJsxProps ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ! This JSX property is assigned multiple times.
  
     8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
     9 │ 
  > 10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
       │        ^^^^^^^^^^^^^^^^
    11 │ 
  
  i This attribute is assigned again here.
  
     8 │ <Hello name="John" name="John" lastname="Doe" lastname="Doe" />;
     9 │ 
  > 10 │ <label xml:lang="en-US" xml:lang="en-US"></label>
       │                         ^^^^^^^^^^^^^^^^
    11 │ 
  

```