php - how to get value from a form before submit -


i want values form before action redirect it. example in form, want grab "text_one" , send database before redirected google. want "text_one" in google too.what should do? 

<form method="post" action="google.com">    <input type="text" name="text_one">    <input type="submit">  </form>

try ...

<form method="post" onsubmit="return getdata()" action="google.com">   <input type="text" name="text_one" id="text_one">   <input type="submit"> </form> <script> function getdata(){       var txtone = document.getelementbyid('text_one').value;       //  } </script>

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