如何将变量从JavaScript发送到php文件？

Question

例如我有一个变量

var test = "done";

如何将其发送到php？然后发布

Answer 1

尝试使用此代码

<script>
 var test = "done";
 document.getElementById('sample').value = test;
</script>

<form method = "post">
   <input type="hidden" id="sample" name="stext">
   <input type="submit" name="submit" value="submit">
</form>

<?php
 echo $_POST['stext'];
?>