TypeError: Illegal invocation

Your datatype is not JSON, it’s a FormData. And for jQuery to send a FormData, it needs…
$.ajax({
    type: "POST",
    url: 'signin2.php',
    data: formData,
    processData: false, //add this
    contentType: false, //and this
})

Similar codes

2 votes142 views1 answer
Word inhoudsopgave
Html
0 vote134 views1 answer
Https://api.github.com/search/issues?q=windows+label:bug+language:python+state:open&sort=created&order=asc
Html
50 votes128 views6 answers
How to change font size in html
Html
0 vote142 views2 answers
CAMBIAR COLOR AA UN ICON SGV EN HTML
Html
0 vote189 views1 answer
Phone fa
Html
0 vote150 views1 answer
Open app instagram with url html tag on android
Html
3 votes174 views4 answers
Input type color
Html
1 vote145 views1 answer
Use v-model in custom component
Html
2 votes140 views1 answer
Info symbol text
Html
38 votes146 views5 answers
HTML Viewport
Html