i create a form where i upload image into database where i create icon input to select the image i want to convert that icon into that picture which i select after slecting the picture.

<label >
                <input asp-for="imge1" name="imge1" type="file" />
                <i ></i>

CSS

input[type="file"] {
    display: none;
}

.custom-file-upload {
    border: 1px solid #ccc;
    display: inline-block;
    padding: 6px 12px;
    cursor: pointer;
    height: 80px;
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--primary-color);
}

CodePudding user response：

little bit change and add some javascrpt and jquery in it.

firslty add this

<div id="selectedBanner"></div>
            <label >
                <input asp-for="imge1" name="imge1" type="file" id="img">
                <i ></i>

then add this javascript and jquery

<script src="https://code.jquery.com/jquery-3.6.0.min.js"
            integrity="sha256-/xUj 3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
            crossorigin="anonymous"></script>
    <script>
        var selDiv = "";
        var storedFiles = [];
        $(document).ready(function () {
            $("#img").on("change", handleFileSelect);
            selDiv = $("#selectedBanner");
        });

        function handleFileSelect(e) {
            var files = e.target.files;
            var filesArr = Array.prototype.slice.call(files);
            filesArr.forEach(function (f) {
                if (!f.type.match("image.*")) {
                    return;
                }
                storedFiles.push(f);

                var reader = new FileReader();
                reader.onload = function (e) {
                    var html =
                        '<img src="'  
                        e.target.result  
                        "\" data-file='"  
                        f.name  
                        "alt='Category Image' height='50px' width='50px'>";
                    selDiv.html(html);
                };
                reader.readAsDataURL(f);
            });
        }
    </script>

CodePudding user response：

Using readAsDataURL you can get file path and set to img tag.

jQuery(document).ready(function() {



    var readURL = function(input) {
        if (input.files && input.files[0]) {
            var reader = new FileReader();

            reader.onload = function(e) {
                $('.input-img').attr('src', e.target.result);

            }

            reader.readAsDataURL(input.files[0]);
        }
    }


    $("input[type='file']").on('change', function() {
        readURL(this);
    });


});

.custom-input-file {
    position: relative;
  cursor:pointer;
}

.custom-input-file .input-file-wrapper {
    height: 150px;
    width: 150px;
    border-radius: 10px;
    position: relative;
}

.custom-input-file .input-file-wrapper .input-img {
    height: 100%;
    -o-object-fit: cover;
    object-fit: cover;
    border: 1px solid #ced4da;
    border-radius: 10px;
  width: 100%;;
}


.custom-input-file .input-file-wrapper input[type=file] {
    position: absolute;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    opacity: 0;
    top: 0;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

<div >                           
      <div >
           <div >
               <img src="https://storage.googleapis.com/proudcity/mebanenc/uploads/2021/03/placeholder-image.png " >
               <input type="file" >
           </div>
      </div>
</div>

CodePudding user response：

U can use readAsDataURL and get Base64 image and put it into <img> source

const state = {
    fileMaxSize: 5,
}
const myImg = document.getElementById('img');
const input = document.getElementById('icon');
const wrap = document.getElementById('wrap');
const getBase64 = (img, callback) => {
    const reader = new FileReader();
    reader.addEventListener('load', () =>   callback(reader.result));
    reader.readAsDataURL(img);
}

input.onchange = () => {
  const file = [...input.files][0];
  
  if (!file) {
    return
  }
    const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png';
    const isLt2M = file.size / 1024 / 1024 < state.fileMaxSize;

    if (!isJpgOrPng || !isLt2M) {
        if (!isJpgOrPng) {
            alert('You can only upload JPG/PNG file!')
        }
        if (!isLt2M) {
            alert(`Image must smaller than ${state.fileMaxSize}MB!`)
        }
        return false
    }

    getBase64(file, imageUrl => {
    let Base64Img = imageUrl
            console.log('File Object ->', file)
            console.log('Base64 Image ->', Base64Img)
            myImg.src = Base64Img
            myImg.style.display = 'block'
             wrap.style.display = 'none'
        }
    );
}

.hidden {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.image-label {
    cursor: pointer;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-sizing: border-box;
    background-color: #fafafa;
    overflow: hidden;
    border:1px dashed #d9d9d9;
}

.image-label img {
  display: none;
  width: 100%;
  height: auto;
}

<input  type="file" id="icon"/>
<label  for="icon">
    <img src="" id="img" />
    <div  id="wrap">
        <div>Select</div>
    </div>
</label>