jquery之利用ajax与服务器交谈(加载内容到元素上之不依赖jquery,而利用原生API)

jquery之利用ajax与服务器交谈(加载内容到元素上之不依赖jquery,而利用原生API)

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实例：

var xhr;if(window.XMLHttpRequest){ xhr = new XMLHttpRequest();}else if(window.ActiveXObject){ xhr = new ActiveXObject("Msxml2.XMLHTTP");}else{ throw new Error("Ajax is not supported by this browser");}xhr.onreadystatechange = function(){ if(xhr.readyState == 4){ if(xhr.status >= 200 && xhr.status <300){ document.getElementById('someContainer').innerHTML = xhr.responseText; } }}xhr.open('GET','/serverResource');xhr.send();