Deleting text of an input field, Solution that works in all the browsers

This should work everywhere. If not, the internet is broken, the world is coming to an end, find a cave and stay there :confused:

String js = 'document.querySelector("[name=my_input]").value = "";'
WebUI.executeJavaScript(js, null)

If the input has an id attribute:

String js = 'document.querySelector("#my_input").value = "";'
WebUI.executeJavaScript(js, null)

Good luck. (but you shouldn’t need it)