HTML代码：

<div id="forAppend" class="demo"></div>

JS代码：

var eleAppend = document.getElementById("forAppend");

window.URL = window.URL || window.webkitURL;

if (typeof history.pushState == "function") {

    var xhr = new XMLHttpRequest();

    xhr.open("get", "/image/study/s/s256/mm1.jpg", true);

    xhr.responseType = "blob";

    xhr.onload = function() {

        if (this.status == 200) {

            var blob = this.response;

            var img = document.createElement("img");

            img.onload = function(e) {

              window.URL.revokeObjectURL(img.src); // 清除释放

            };

            img.src = window.URL.createObjectURL(blob);

            eleAppend.appendChild(img);

        }

    }

    xhr.send();

} else {

    eleAppend.innerHTML = '<p style="color:#cd0000;">浏览器不给力，还是早点回去给孩子喂奶吧~</p>';

}