blocks|key|360226|text|在输入标签中添加data-max-size="100“|type|unstyled|depth|inlineStyleRanges|entityRanges|data|360227|++<form++class="upload-form">
++++++++<input+id="previewPhoto"+class="upload-file"+data-max-size="100"+type="file"+>
++++++++<input+type=submit>
++++</form>|code-block|syntax|javascript|360228|Jquery调用函数:在submit按钮上，将执行此函数。它将获得输入标签的最大大小属性值，并将其与文件大小值进行比较。|360229|$(function(){
++++var+fileInput+=+$('#previewPhoto');
++++var+maxSize+=+fileInput.data('max-size');
++++$('#previewPhoto').submit(function(e){
++++++++if(fileInput.get(0).files.length){
++++++++++++var+fileSize+=+fileInput.get(0).files[0].size;+//+in+bytes
++++++++++++if(fileSize>maxSize){
++++++++++++++++alert('file+size+is+more+then'+%2B+maxSize+%2B+'+bytes');
++++++++++++++++return+false;
++++++++++++}else{
++++++++++++++++alert('file+size+is+correct-+'%2BfileSize%2B'+bytes');
++++++++++++}
++++++++}else{
++++++++++++alert('choose+file,+please');
++++++++++++return+false;
++++++++}

++++});
});|360230|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<p>Add data-max-size="100" in your input tag</p>

<pre><code>  &lt;form  class="upload-form"&gt;
        &lt;input id="previewPhoto" class="upload-file" data-max-size="100" type="file" &gt;
        &lt;input type=submit&gt;
    &lt;/form&gt;
</code></pre>

<p>Jquery invoking function : on submit button this function will be execute. It will get Input tag's max-size attribute value and compare it with Files size value.</p>

<pre><code>$(function(){
    var fileInput = $('#previewPhoto');
    var maxSize = fileInput.data('max-size');
    $('#previewPhoto').submit(function(e){
        if(fileInput.get(0).files.length){
            var fileSize = fileInput.get(0).files[0].size; // in bytes
            if(fileSize&gt;maxSize){
                alert('file size is more then' + maxSize + ' bytes');
                return false;
            }else{
                alert('file size is correct- '+fileSize+' bytes');
            }
        }else{
            alert('choose file, please');
            return false;
        }

    });
});
</code></pre>


blocks|key|2400011|text|您可以在输入file.size事件上使用change获取大小(以字节为单位)。基于此，您可以提供有关文件大小的警报：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2400012|if(file.size+>+100000){
++++return+alert("file+is+to+big")
}|code-block|syntax|javascript|2400013|Demo|BOLD|2400014|​|2400015|function+previewPhotoInput(obj)+{
++var+$preview+=+$('#previewPhoto');
++if+(obj.files)+{
++++var+files+=+obj.files;
++++$.each(files,+function(i,+file)+{
++++++if+(!/\.(jpeg%7Cjpg)$/i.test(file.name))+{
++++++++return+alert("Invalid+Format!");
++++++}
++++++if(file.size+>+100000){
++++++++return+alert("file+is+to+big")
++++++}
++++++var+reader+=+new+FileReader();
++++++$(reader).on("load",+function()+{
++++++++$preview.append($("<img/>",+{
++++++++++src:+this.result,
++++++++++height:+100
++++++++}));
++++++});
++++++reader.readAsDataURL(file);
++++});
++}
}|2400016|<script+src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input+type="file"+multiple+onchange="previewPhotoInput(this)">|2400017|2400018|entityMap^0|6|9|K|6|0|0|0|4|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|M]]|D|@]|E|$]]|$1|N|3|O|5|6|7|15|8|@]|D|@]|E|$]]|$1|P|3|Q|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|R|3|S|5|H|7|17|8|@]|D|@]|E|$I|J]]|$1|T|3|O|5|6|7|18|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|V|$]]

<p>You can use <code>file.size</code>, on the input <code>change</code> event to get the size in bytes. Based on that you could provide an alert regarding the file size:</p>

<pre><code>if(file.size &gt; 100000){
    return alert("file is to big")
}
</code></pre>

<p><strong>Demo</strong></p>

<p><div class="snippet" data-lang="js" data-hide="true" data-console="true" data-babel="false">
<div class="snippet-code snippet-currently-hidden">
<pre class="snippet-code-js lang-js prettyprint-override"><code>function previewPhotoInput(obj) {
  var $preview = $('#previewPhoto');
  if (obj.files) {
    var files = obj.files;
    $.each(files, function(i, file) {
      if (!/\.(jpeg|jpg)$/i.test(file.name)) {
        return alert("Invalid Format!");
      }
      if(file.size &gt; 100000){
        return alert("file is to big")
      }
      var reader = new FileReader();
      $(reader).on("load", function() {
        $preview.append($("&lt;img/&gt;", {
          src: this.result,
          height: 100
        }));
      });
      reader.readAsDataURL(file);
    });
  }
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt;
&lt;input type="file" multiple onchange="previewPhotoInput(this)"&gt;</code></pre>
</div>
</div>
</p>


blocks|key|2400036|text|使用file.size。您将按字节大小，但可以转换为KB。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2400037|+++++function+previewPhotoInput()+{
++++++++++++var+$preview+=+$('#previewPhoto');
++++++++++++if+(this.files)+{
++++++++++++++++var+files+=+this.files;

++++++++++++++++$.each(files,+function+(i,+file)+{
+++++++++++++++++++++++var+size=(file.size)/1000;
+++++++++++++++++++++++if(size>100){
++++++++++++++++++++++++++return+alert("File+should+be+less+than+100K");+
+++++++++++++++++++++++}

+++++++++++++++++++++++if+(!/\.(jpeg%7Cjpg)$/i.test(file.name))+{
++++++++++++++++++++++++++return+alert("Invalid+Format!");
+++++++++++++++++++++++}+

++++++++++++++++++++var+reader+=+new+FileReader();
++++++++++++++++++++$(reader).on("load",+function+()+{
++++++++++++++++++++++++$preview.append($("<img/>",+{+src:+this.result,+height:+100+}));
++++++++++++++++++++});
++++++++++++++++++++reader.readAsDataURL(file);
++++++++++++++++});
++++++++++++}
++++++++}|code-block|syntax|javascript|2400038|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Use file.size . You will size in bytes but you can convert to KB.</p>

<pre><code>     function previewPhotoInput() {
            var $preview = $('#previewPhoto');
            if (this.files) {
                var files = this.files;

                $.each(files, function (i, file) {
                       var size=(file.size)/1000;
                       if(size&gt;100){
                          return alert("File should be less than 100K"); 
                       }

                       if (!/\.(jpeg|jpg)$/i.test(file.name)) {
                          return alert("Invalid Format!");
                       } 

                    var reader = new FileReader();
                    $(reader).on("load", function () {
                        $preview.append($("&lt;img/&gt;", { src: this.result, height: 100 }));
                    });
                    reader.readAsDataURL(file);
                });
            }
        }
</code></pre>


blocks|key|360266|text|在提交输入表单或文件输入控件更改时使用下列方法和调用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|360267|function+ValidateImageFile()+{
++++++++++++++++++++var+file+=+$(".fupFileUpload")[0].files[0];+//fupFileUpload+add+class+to+your+file+upload+control
++++++++++++++++++++var+fileType+=+file.type;
++++++++++++++++++++var+ValidImageTypes+=+["image/gif",+"image/jpeg",+"image/png",+"image/tiff",+,+"image/bmp"];
++++++++++++++++++++if+($.inArray(fileType,+ValidImageTypes)+<+0)+{
+++++++++++++++++++++++alert("Please+select+valid+image+file.");+//set+label+text+if+you+want+to+display+error+message+in+label
++++++++++++++++++++++++return+false;
++++++++++++++++++++}
++++++++++++++++++++else+if(+file.size+>+1000000){+//+file.size+is+in+bytes
++++++++++++++++++++++++alert("Please+select+file+less+than+100+kb.");
++++++++++++++++++++++++return+false;
++++++++++++++++++++}
++++++++++++++++++++return+true;
++++++++++++++++}|code-block|syntax|javascript|360268|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>Use following method and call while submitting your input form or while file input control changes</p>

<pre><code>function ValidateImageFile() {
                    var file = $(".fupFileUpload")[0].files[0]; //fupFileUpload add class to your file upload control
                    var fileType = file.type;
                    var ValidImageTypes = ["image/gif", "image/jpeg", "image/png", "image/tiff", , "image/bmp"];
                    if ($.inArray(fileType, ValidImageTypes) &lt; 0) {
                       alert("Please select valid image file."); //set label text if you want to display error message in label
                        return false;
                    }
                    else if( file.size &gt; 1000000){ // file.size is in bytes
                        alert("Please select file less than 100 kb.");
                        return false;
                    }
                    return true;
                }
</code></pre>


<p>I want to have <code>input</code> tag for uploading multiple images.</p>

<p>I have format limitation in preview (called on change trigger) as below. How can I add another limitation for images greater than 100kb?</p>

<pre><code>function previewPhotoInput() {
    var $preview = $('#previewPhoto');
    if (this.files) {
        var files = this.files;
        $.each(files, function (i, file) {
            if (!/\.(jpeg|jpg)$/i.test(file.name)) {
                return alert("Invalid Format!");
            } 
            var reader = new FileReader();
            $(reader).on("load", function () {
                $preview.append($("&lt;img/&gt;", { src: this.result, height: 100 }));
            });
            reader.readAsDataURL(file);
        });
    }
}
</code></pre>


How to limit the user to upload only photos less than 100 KB

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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我想有input标签上传多个图片。我在预览中有格式限制(调用更改触发器)如下所示。如何对大于100 can的图像添加另一个限制？function previewPhotoInput() {    var $preview = $('#previewPhoto');    if (this.files) {       ...

问如何限制用户仅上传小于100 KB的照片
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问如何限制用户仅上传小于100 KB的照片EN