这次给大家带来Angularjs实现图片预览上传，Angularjs实现图片预览上传的注意事项有哪些，下面就是实战案例，一起来看一下。
废话不多说了，直接给大家贴代码了，具体代码如下所示：
<input type="file"ng-file-select="onFileSelect($files)"accept="image/*">
app.factory("fileReader",function($q, $log) {
varonLoad =function(reader, deferred, scope) {
returnfunction() {
scope.$apply(function() {
deferred.resolve(reader.result);
});
};
};
varonError =function(reader, deferred, scope) {
returnfunction() {
scope.$apply(function() {
deferred.reject(reader.result);
});
};
};
varonProgress =function(reader, scope) {
returnfunction(event) {
scope.$broadcast("fileProgress",
{
total: event.total,
loaded: event.loaded
});
};
};
vargetReader =function(deferred, scope) {
varreader =newFileReader();
reader.onload = onLoad(reader, deferred, scope);
reader.onerror = onError(reader, deferred, scope);
reader.onprogress = onProgress(reader, scope);
returnreader;
};
varreadAsDataURL =function(file, scope) {
vardeferred = $q.defer();
varreader = getReader(deferred, scope);
reader.readAsDataURL(file);
returndeferred.promise;
};
return{
readAsDataUrl: readAsDataURL
};
});选择图片后执行的方法
$scope.onFileSelect =function(files) {
varfileIn=files[0];
varimg =newImage();
varfileType = fileIn.name.substring(fileIn.name.lastIndexOf(".") + 1, fileIn.name.length);
if(fileIn.size>5242880){//单位是B，此处不允许超过5M
alert("图片不能超过5M")
return;
}
if(fileType=='JPG'|| fileType=='PNG'|| fileType=='JPEG '|| fileType=='jpg'|| fileType=='png'|| fileType=='jpeg'){
}else{
alert("图片格式只支持:JPG,PNG,JPEG")
return;
}
fileReader.readAsDataUrl(fileIn, $scope)
.then(function(result) {
$scope.imageSrc = result;
console.log(img.width);
});
}相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
推荐阅读：
以上是Angularjs实现图片预览上传的详细内容。更多信息请关注PHP中文网其他相关文章！
