js input file 解决获取的路径不全问题

 function clickItem(node){
 var e= getObjectURL(node.files[0]);
$('#image')[0].src = e;


}

function getObjectURL(file) {

var url = null;
if(window.createObjectURL != undefined) { // basic
url = window.createObjectURL(file);
} else if(window.URL != undefined) { // mozilla(firefox)
url = window.URL.createObjectURL(file);
} else if(window.webkitURL != undefined) { // webkit or chrome
url = window.webkitURL.createObjectURL(file);
}
return url;
}