如何嵌入按钮和提示（）框？

Question

I am trying to embed button add prompt box as:

<?php
 echo "<input type='button' name='ok'onclick=prompt('Enter Your email address')value='OK'>";
?>

Its not working. Moreover, On button click a prompt box will appear and user will enter his/her email address and as he/she hit enter email has to b sent on entered email id.

Answer 1

1) Arguments with whitespace need to be closed in apostrophes or quote marks.

2) Your code is using apostrophes for both inside of the onclick and the prompt.

echo "<input type='button' name='ok' onclick='prompt(\"Enter Your email address\");' value='OK'>";