javascript - 将变量从 javascript 传递到 php 而不使用 window.location

Question

我通过单击“添加”按钮动态创建文本框。在此，单击“添加”按钮时我会递增计数变量。如何在我的 PHP 文件中获取此计数值。我已尝试过 window.location 但它没有工作。我的代码是:

<script>
  var counter=1;
  function generateRow() {
   var count=counter;

    var temp ="<div class='_25'>Answer:<input type='textbox' size='100' id='textbox' name='mytext[]"+counter+"' placeholder='Please enter your answer text here.....'></input><input name='' type='button' value='Delete' /></div>";

    var newdiv = document.createElement('div');
    newdiv.innerHTML = temp + count;

    var yourDiv = document.getElementById('div');

    yourDiv.appendChild(newdiv);

    var js_var=counter++;

    xmlhttp.open("GET","tt.php?js_var="+js_var,true);
    xmlhttp.send(); 
 }
</script>

Answer 1

在php文件中

$count_val=$_GET['js_var'];