form error

[mohammad2232]

hello

how can i change form error message ?

https://www.w3schools.com/w3css/tryit.asp?filename=tryw3css_examples_contact

when don't fill required field it show :

please fill out this field

how can i change it ?

thanks

[dsonesuk]

3 options

1) PHP validation, this should be always done, even if using below options, as JavaScript can be disabled, and html amended.

2) html, add 'required' attribute to inputs.

3) JavaScript validation, use this method to validate inputs before submitting, this is a more user friendly option, but JS can be disabled, allowing invalid input content through, that is why PHP validation is always necessary.