I have just come across the concept of inline images. Even if the image file is encoded into base64 for inline images, look at the code below to see the inline problem.
It can reduce http requests, but the disadvantage is that it cannot be cached across domains!
Then how to convert pictures to base64 online
If you only rely on simple javascript, there is js with permission issues does not allow operations on local files or folders for security reasons
Now that HTML5 is here, there is a lot of information on Baidu, including Chinese and w3c documents http://www. w3.org/TR/FileAPI/
Now we use the readAsDataURL function in the file api of html5. This is a function that converts the file into base64 encoding
Simple html5 File test for pic2base64< /title> <br><style> <br></style> <br><script> <br>window.onload = function(){ <br>var input = document.getElementById("demo_input") ; <br>var result= document.getElementById("result"); <br>var img_area = document.getElementById("img_area"); <br>if ( typeof(FileReader) === 'undefined' ){ <br>result.innerHTML = "Sorry, your browser does not support FileReader, please use a modern browser! "; <br>input.setAttribute( 'disabled','disabled' ); <br>} else { <br>input.addEventListener( 'change',readFile,false );} <br>} <br>function readFile (){ <br>var file = this.files[0]; <br>//Here we judge the type. If it is not an image, return it and remove it. Then you can upload any file <br>if(!/image/w /.test (file.type)){ <br>alert("Please make sure the file is of image type"); <br>return false; <br>} <br>var reader = new FileReader(); <br>reader.readAsDataURL( file); <br>reader.onload = function(e){ <br>result.innerHTML = '<img src="' this.result '" alt=""/>'; <br>img_area.innerHTML = '<div class="sitetip">Image img tag display: </div><img src="' this.result '" alt=""/>'; <br>} <br> } <br></script> <br></head> <br><body> <br><input type="file" value="sdgsdg" id="demo_input" /> <br><textarea id="result" rows=30 cols=300></textarea> <br><p id="img_area"></p> <br></body> <br> </html> <br>
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<a href="https://www.php.cn/faq/1796600245.html" title="Table Border in HTML" class="phphistorical_Version2_mids_img">
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src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/202409/04/2024090416492486715.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Table Border in HTML" />
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<a href="https://www.php.cn/faq/1796600245.html" title="Table Border in HTML" class="phphistorical_Version2_mids_title">Table Border in HTML</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:49 PM</span>
<p class="Articlelist_txts_p">Guide to Table Border in HTML. Here we discuss multiple ways for defining table-border with examples of the Table Border in HTML.</p>
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<a href="https://www.php.cn/faq/1796600244.html" title="Nested Table in HTML" class="phphistorical_Version2_mids_img">
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<a href="https://www.php.cn/faq/1796600244.html" title="Nested Table in HTML" class="phphistorical_Version2_mids_title">Nested Table in HTML</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:49 PM</span>
<p class="Articlelist_txts_p">This is a guide to Nested Table in HTML. Here we discuss how to create a table within the table along with the respective examples.</p>
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<a href="https://www.php.cn/faq/1796600238.html" title="HTML margin-left" class="phphistorical_Version2_mids_img">
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<a href="https://www.php.cn/faq/1796600238.html" title="HTML margin-left" class="phphistorical_Version2_mids_title">HTML margin-left</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:48 PM</span>
<p class="Articlelist_txts_p">Guide to HTML margin-left. Here we discuss a brief overview on HTML margin-left and its Examples along with its Code Implementation.</p>
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<a href="https://www.php.cn/faq/1796600271.html" title="HTML Table Layout" class="phphistorical_Version2_mids_title">HTML Table Layout</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:54 PM</span>
<p class="Articlelist_txts_p">Guide to HTML Table Layout. Here we discuss the Values of HTML Table Layout along with the examples and outputs n detail.</p>
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<a href="https://www.php.cn/faq/1796600269.html" title="HTML Input Placeholder" class="phphistorical_Version2_mids_title">HTML Input Placeholder</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:54 PM</span>
<p class="Articlelist_txts_p">Guide to HTML Input Placeholder. Here we discuss the Examples of HTML Input Placeholder along with the codes and outputs.</p>
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<a href="https://www.php.cn/faq/1796600210.html" title="HTML Ordered List" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/202409/04/2024090416432927533.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="HTML Ordered List" />
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<a href="https://www.php.cn/faq/1796600210.html" title="HTML Ordered List" class="phphistorical_Version2_mids_title">HTML Ordered List</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:43 PM</span>
<p class="Articlelist_txts_p">Guide to the HTML Ordered List. Here we also discuss introduction of HTML Ordered list and types along with their example respectively</p>
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<a href="https://www.php.cn/faq/1796600246.html" title="HTML onclick Button" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/202409/04/2024090416493797970.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="HTML onclick Button" />
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<a href="https://www.php.cn/faq/1796600246.html" title="HTML onclick Button" class="phphistorical_Version2_mids_title">HTML onclick Button</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:49 PM</span>
<p class="Articlelist_txts_p">Guide to HTML onclick Button. Here we discuss their introduction, working, examples and onclick Event in various events respectively.</p>
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<a href="https://www.php.cn/faq/1796600227.html" title="Moving Text in HTML" class="phphistorical_Version2_mids_img">
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src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/202409/04/2024090416455153019.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Moving Text in HTML" />
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<a href="https://www.php.cn/faq/1796600227.html" title="Moving Text in HTML" class="phphistorical_Version2_mids_title">Moving Text in HTML</a>
<span class="Articlelist_txts_time">Sep 04, 2024 pm 04:45 PM</span>
<p class="Articlelist_txts_p">Guide to Moving Text in HTML. Here we discuss an introduction, how marquee tag work with syntax and examples to implement.</p>
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