js上传图片
2018-04-02 本文已影响0人
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="js/jquery2.1.3.min.js"></script>
</head>
<style>
</style>
<body>
<form action='' method='post' name='myform'>
<input type='file' id='iptfileupload' onchange='show()' value='' />
<img src='1.jpg' alt='' id='img' />
</form>
</body>
<script>
function getPath(obj, fileQuery, transImg) {
var imgSrc = '',
imgArr = [],
strSrc = '';
if(window.navigator.userAgent.indexOf("MSIE") >= 1) { // IE浏览器判断
if(obj.select) {
obj.select();
var path = document.selection.createRange().text;
alert(path);
obj.removeAttribute("src");
imgSrc = fileQuery.value;
imgArr = imgSrc.split('.');
strSrc = imgArr[imgArr.length - 1].toLowerCase();
if(strSrc.localeCompare('jpg') === 0 || strSrc.localeCompare('jpeg') === 0 || strSrc.localeCompare('gif') === 0 || strSrc.localeCompare('png') === 0) {
obj.setAttribute("src", transImg);
obj.style.filter =
"progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + path + "', sizingMethod='scale');"; // IE通过滤镜的方式实现图片显示
} else {
//try{
throw new Error('File type Error! please image file upload..');
//}catch(e){
// alert('name: ' + e.name + 'message: ' + e.message) ;
//}
}
} else {
// alert(fileQuery.value) ;
imgSrc = fileQuery.value;
imgArr = imgSrc.split('.');
strSrc = imgArr[imgArr.length - 1].toLowerCase();
if(strSrc.localeCompare('jpg') === 0 || strSrc.localeCompare('jpeg') === 0 || strSrc.localeCompare('gif') === 0 || strSrc.localeCompare('png') === 0) {
obj.src = fileQuery.value;
} else {
//try{
throw new Error('File type Error! please image file upload..');
//}catch(e){
// alert('name: ' + e.name + 'message: ' + e.message) ;
//}
}
}
} else {
var file = fileQuery.files[0];
var reader = new FileReader();
reader.onload = function(e) {
imgSrc = fileQuery.value;
imgArr = imgSrc.split('.');
strSrc = imgArr[imgArr.length - 1].toLowerCase();
if(strSrc.localeCompare('jpg') === 0 || strSrc.localeCompare('jpeg') === 0 || strSrc.localeCompare('gif') === 0 || strSrc.localeCompare('png') === 0) {
obj.setAttribute("src", e.target.result);
} else {
//try{
throw new Error('File type Error! please image file upload..');
//}catch(e){
// alert('name: ' + e.name + 'message: ' + e.message) ;
//}
}
// alert(e.target.result);
}
reader.readAsDataURL(file);
}
}
function show() {
//以下即为完整客户端路径
var file_img = document.getElementById("img"),
iptfileupload = document.getElementById('iptfileupload');
getPath(file_img, iptfileupload, file_img);
}
</script>
</html>
