使用上传按钮上传图像

Question

I have an upload button that allows a user to upload only an image and it will be displayed in a div. After uploading the image if the user clicks on the image I want to display the image in a popup. Please help me how to achieve this.

Answer 1

try this code

 function readURL(input) { if (input.files && input.files[0]) { var reader = new FileReader(); reader.onload = function(e) { $('#blah').attr('src', e.target.result); } reader.readAsDataURL(input.files[0]); } } $("#imgInp").change(function() { readURL(this); }); var modal = document.getElementById('myModal'); $("#blah").click(function() { modal.style.display = "block"; $('.img').html(this); }); var span = document.getElementsByClassName("close")[0]; span.onclick = function() { modal.style.display = "none"; } 

 /* The Modal (background) */ .modal { display: none; /* Hidden by default */ position: fixed; /* Stay in place */ z-index: 1; /* Sit on top */ left: 0; top: 0; width: 100%; /* Full width */ height: 100%; /* Full height */ overflow: auto; /* Enable scroll if needed */ background-color: rgb(0, 0, 0); /* Fallback color */ background-color: rgba(0, 0, 0, 0.4); /* Black w/ opacity */ } /* Modal Content/Box */ .modal-content { background-color: #fefefe; margin: 15% auto; /* 15% from the top and centered */ padding: 20px; border: 1px solid #888; width: 50%; /* Could be more or less, depending on screen size */ } /* The Close Button */ .close { color: #aaa; float: right; font-size: 28px; font-weight: bold; } .close:hover, .close:focus { color: black; text-decoration: none; cursor: pointer; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <form id="form1" runat="server"> <input type='file' id="imgInp" /> <img id="blah" src="#" alt="your image" height="100" width="100" /> </form> <div id="myModal" class="modal"> <!-- Modal content --> <div class="modal-content"> <span class="close">&times;</span> <div class="img"></div> </div> </div>