PC端上传文件多半用插件,引入flash都没关系,但是移动端要是还用各种冗余的插件估计得被喷死,项目里面需要做图片上传的功能,既然H5已经有相关的接口且兼容性良好,当然优先考虑用H5来实现。
用的技术主要是:
ajax
FileReader
FormData
HTML结构:
XML/HTML Code复制内容到剪贴板
- div class="camera-area">
-
form enctype="multipart/form-data" method="post">
-
input type="file" name="fileToUpload" class="fileToUpload" accept="image/*" capture="camera"/>
-
div class="upload-progress">span>span>div>
-
form>
-
div class="thumb">div>
-
div>
-
已经封装好的upload.js,依赖zepto
JavaScript Code复制内容到剪贴板
-
(function($) {
-
$.extend($.fn, {
-
fileUpload: function(opts) {
-
this.each(function() {
-
var $self = $(this);
-
var doms = {
-
"fileToUpload": $self.find(".fileToUpload"),
-
"thumb": $self.find(".thumb"),
-
"progress": $self.find(".upload-progress")
-
};
-
var funs = {
-
-
"fileSelected": function() {
-
var files = (doms.fileToUpload)[0].files;
-
var count = files.length;
-
for (var index = 0; index
-
var file = files[index];
-
var fileSize = 0;
-
if (file.size > 1024 * 1024)
-
fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB';
-
else
-
fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB';
-
}
-
funs.uploadFile();
-
},
-
-
uploadFile: function() {
-
var fd = new FormData();
-
var files = (doms.fileToUpload)[0].files;
-
var count = files.length;
-
for (var index = 0; index
-
var file = files[index];
-
fd.append(opts.file, file);
-
funs.previewImage(file);
-
}
-
var xhr = new XMLHttpRequest();
-
xhr.upload.addEventListener("progress", funs.uploadProgress, false);
-
xhr.addEventListener("load", funs.uploadComplete, false);
-
xhr.addEventListener("error", opts.uploadFailed, false);
-
xhr.open("POST", opts.url);
-
xhr.send(fd);
-
},
-
-
previewImage: function(file) {
-
var gallery = doms.thumb;
-
var img = document.createElement("img");
-
img.file = file;
-
doms.thumb.html(img);
-
-
var reader = new FileReader();
-
reader.onload = (function(aImg) {
-
return function(e) {
-
aImg.src = e.target.result;
-
};
-
})(img);
-
reader.readAsDataURL(file);
-
},
-
uploadProgress: function(evt) {
-
if (evt.lengthComputable) {
-
var percentComplete = Math.round(evt.loaded * 100 / evt.total);
-
doms.progress.html(percentComplete.toString() + '%');
-
}
-
},
-
"uploadComplete": function(evt) {
-
alert(evt.target.responseText)
-
}
-
};
-
doms.fileToUpload.on("change", function() {
-
doms.progress.find("span").width("0");
-
funs.fileSelected();
-
});
-
});
-
}
-
});
-
})(Zepto);
调用方法:
JavaScript Code复制内容到剪贴板
-
$(".camera-area").fileUpload({
-
"url": "savetofile.php",
-
"file": "myFile"
-
});
PHP部分:
PHP Code复制内容到剪贴板
-
-
if (isset($_FILES['myFile'])) {
-
-
writeLog($_FILES);
-
move_uploaded_file($_FILES['myFile']['tmp_name'], "uploads/" . $_FILES['myFile']['name']);
-
echo 'successful';
-
}
-
function writeLog($log){
-
if(is_array($log) || is_object($log)){
-
$log = json_encode($log);
-
}
-
$log = $log."\r\n";
-
-
file_put_contents('log.log', $log,FILE_APPEND);
-
}
-
?>
以上就是本文的全部内容,希望对大家的学习有所帮助。
原文:http://www.cnblogs.com/hutuzhu/p/5254532.html