Javascript 动态创建html以获取图像-我希望在提交之前显示检索到的图像
我正在使用js动态创建加载图像的html。我想在选择图像后显示它。我找到了这样做的功能;然而,在我的例子中,它们并没有显示图像。我尝试在调用“$(document).ready(function(){”中的“function displayCamp(){”之前放置函数 选择将起作用并显示图像名称 js:Javascript 动态创建html以获取图像-我希望在提交之前显示检索到的图像,javascript,jquery,html,Javascript,Jquery,Html,我正在使用js动态创建加载图像的html。我想在选择图像后显示它。我找到了这样做的功能;然而,在我的例子中,它们并没有显示图像。我尝试在调用“$(document).ready(function(){”中的“function displayCamp(){”之前放置函数 选择将起作用并显示图像名称 js: 函数displayCamp(){ $('#ajaxGetUserServletResponse1')。文本(''; sessionStorage.setItem('ssCamp','packho
函数displayCamp(){
$('#ajaxGetUserServletResponse1')。文本('';
sessionStorage.setItem('ssCamp','packholiday');
var dataToBeSent={
ssYMID:sessionStorage.getItem('ssYMID'),
ssCamp:sessionStorage.getItem('ssCamp'),
};
//获取营地详细信息
$.ajax({
url:'CampView',//您的Servlet映射或JSP(不建议使用)
数据:dataToBeSent,
键入:“POST”,
缓存:false
})
.fail(函数(jqXHR、textStatus、errorshown){
//警报(jqXHR.responseText);
if(jqXHR.responseText.includes('No-camps')){
$('ajaxGetUserServletResponse').text('No camps');
}否则{
$('#ajaxGetUserServletResponse').text('获取联接数据时出错');
}
$(“#开始日期”).focus();
})
.完成(功能(响应JSON1A){
//用于填充选项卡的JSON响应
数据类型:“json”;
//活动结构为:
//字符串eventId、字符串cdId、字符串eventType、,
//字符串eventDateStart、字符串eventDateEnd、字符串eventLocation、字符串eventDetails、,
//字符串eventNights、字符串eventNightsBuilding、字符串eventNightsCanvas、字符串eventPicture、,
//字符串eventKm、字符串eventKmActual、字符串eventKmOffset
//添加选项卡标题
$(“#tabHeading”).find(“li”).remove();
var headingItems='';
对于(变量i=0;i;
}
$(“#我的标签”)。附加(标题项);
//添加选项卡内容
var内容=“”;
对于(变量i=0;i
将“函数readURL(输入){”放在“$”(“#我的选项卡a:第一个”).tab(“显示”)之后
js:
函数displayCamp(){
$('#ajaxGetUserServletResponse1')。文本('';
sessionStorage.setItem('ssCamp','packholiday');
var dataToBeSent={
ssYMID:sessionStorage.getItem('ssYMID'),
ssCamp:sessionStorage.getItem('ssCamp'),
};
//获取营地详细信息
$.ajax({
url:'CampView',//您的Servlet映射或JSP(不建议使用)
数据:dataToBeSent,
键入:“POST”,
缓存:false
})
.fail(函数(jqXHR、textStatus、errorshown){
//警报(jqXHR.responseText);
if(jqXHR.responseText.includes('No-camps')){
$('ajaxGetUserServletResponse').text('No camps');
}否则{
$('#ajaxGetUserServletResponse').text('获取联接数据时出错');
}
$(“#开始日期”).focus();
})
.完成(功能(响应JSON1A){
//用于填充选项卡的JSON响应
数据类型:“json”;
//活动结构为:
//字符串eventId、字符串cdId、字符串eventType、,
//字符串eventDateStart、字符串eventDateEnd、字符串eventLocation、字符串eventDetails、,
//字符串eventNights、字符串eventNightsBuilding、字符串eventNightsCanvas、字符串eventPicture、,
//字符串eventKm、字符串eventKmActual、字符串eventKmOffset
//添加选项卡标题
$(“#tabHeading”).find(“li”).remove();
var headingItems='';
对于(变量i=0;i;
}
$(“#我的标签”)。附加(标题项);
//添加选项卡内容
var内容=“”;
对于(变量i=0;i
以下是我所做的更改:
//Column 2 to contain the image
contents += '<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">';
contents += '<label class="control-label control-label-left col-lg-4 col-md-4 col-sm-4 col-xs-4" for="'+obj.eventId+'">Photograph:</label>';
contents += '<input class="form-control-file col-lg-8 col-md-8 col-sm-8 col-xs-8 photo-input" type="file" id="'+obj.eventId+'" name="photo" placeholder="Photograph">';
contents += '<img id="campImage'+obj.eventId+'" src="' + obj.eventPicture + '" alt="Camp image" class="img-thumbnail">';
contents += '</div>';
我在下面找到了,它只工作了
function displayCamp() {
$('#ajaxGetUserServletResponse1').text('');
sessionStorage.setItem('ssCamp', 'Pack Holiday');
var dataToBeSent = {
ssYMID : sessionStorage.getItem('ssYMID'),
ssCamp : sessionStorage.getItem('ssCamp'),
};
//Get camp details
$.ajax({
url : 'CampView', // Your Servlet mapping or JSP(not suggested)
data : dataToBeSent,
type : 'POST',
cache: false
})
.fail (function(jqXHR, textStatus, errorThrown) {
//alert(jqXHR.responseText);
if(jqXHR.responseText.includes('No camps')){
$('#ajaxGetUserServletResponse').text('No camps.');
}else{
$('#ajaxGetUserServletResponse').text('Error getting joined data.');
}
$("#startDate").focus();
})
.done(function(responseJson1a){
// JSON response to populate the Tabs
dataType: "json";
// Event structure is:
// String eventId, String cdId, String eventType,
// String eventDateStart, String eventDateEnd, String eventLocation, String eventDetails,
// String eventNights, String eventNightsBuilding, String eventNightsCanvas, String eventPicture,
// String eventKm, String eventKmActual, String eventKmOffset
//Add Tab headings
$("#tabHeading").find("li").remove();
var headingItems = '';
for(var i = 0; i < responseJson1a.length; i++) {
var obj = responseJson1a[i];
// data-toggle="tab" is required.
headingItems += '<li id="' + i + '"><a data-toggle="tab" href="#' + obj.eventId +'">' + obj.eventLocation + '</a></li>';
}
$("#my-tabs ul").append(headingItems);
//Add Tab contents
var contents = '';
for(var i = 0; i < responseJson1a.length; i++) {
var obj = responseJson1a[i];
// class="tab-pane" is required.
contents += '<div class="tab-pane fade" id="' + obj.eventId + '">';
contents += '<div class="row col-lg-12 col-md-12 col-sm-12 col-xs-12">';
contents += '<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">';
contents += '<label class="control-label control-label-left col-lg-4 col-md-4 col-sm-4 col-xs-4" for="photo">Photograph:</label>';
contents += '<input class="form-control-file col-lg-8 col-md-8 col-sm-8 col-xs-8" type="file" id="photo" name="photo" placeholder="Photograph">';
contents += '<img id="campImage" src="#" alt="Camp image" class="img-thumbnail">';
contents += '</div>';
contents += '</div>';
$("#tabContent").append(contents);
contents = '';
}
// show the first tab.
$("#my-tabs a:first").tab("show");
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#campImage').attr('src', e.target.result);
}
reader.readAsDataURL(input.files[0]);
}
}
$("#photo").change(function(){
readURL(this);
});
})
}
//Column 2 to contain the image
contents += '<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">';
contents += '<label class="control-label control-label-left col-lg-4 col-md-4 col-sm-4 col-xs-4" for="'+obj.eventId+'">Photograph:</label>';
contents += '<input class="form-control-file col-lg-8 col-md-8 col-sm-8 col-xs-8 photo-input" type="file" id="'+obj.eventId+'" name="photo" placeholder="Photograph">';
contents += '<img id="campImage'+obj.eventId+'" src="' + obj.eventPicture + '" alt="Camp image" class="img-thumbnail">';
contents += '</div>';
$(document).on('change', '.photo-input', function(){
alert("this.id: " + this.id);
readURL(this, this.id);
});
function readURL(input, id) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
$('#campImage'+id).attr('src', e.target.result);
}
reader.readAsDataURL(input.files[0]);
}
}