代码示例：（标识：eg_js_json_ajax_array）
<!DOCTYPE html>
<html>
<body>
<h1>数组内容</h1>
<p>以 JSON 数组写的内容会被转换为 JavaScript 数组。</p>
<p id="demo"></p>
<script>
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
var myArr = JSON.parse(this.responseText);
document.getElementById("demo").innerHTML = myArr[0];
}
};
xmlhttp.open("GET", "/static/demo/txt/json_demo_array.txt", true);
xmlhttp.send();
</script>
<p>查看 <a href="/static/demo/txt/json_demo_array.txt" target="_blank">json_demo_array.txt</a></p>
</body>
</html>
