html运行实例（eg_js_json_php_db

代码示例：（标识：eg_js_json_php_db_loop）

<!DOCTYPE html>
<html>
<body>

<h1>通过服务器上的 PHP 文件获取 JSON 数据</h1>

<p id="demo"></p>

<script>
var xmlhttp, myObj, x, txt = "";
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
  if (this.readyState == 4 && this.status == 200) {
    myObj = JSON.parse(this.responseText);
    for (x in myObj) {
      txt += myObj[x].CustomerId + "<br>";
    }
    document.getElementById("demo").innerHTML = txt;
  }
};
xmlhttp.open("GET", "/static/demo/php/demo_json_db.php", true);
xmlhttp.send();
</script>
</body>
</html>