Detailed explanation of html browser automatically adding tag

Problem scenario:

I clicked a request on page A, opened a new page (B), and passed HttpServlet on the backend Response.getWriter().write(html) method is used to write the information into the newly opened page B; [Digression: The reason for this is to solve the problem of the newly opened page being intercepted by the browser]

But there is no problem in IE6, 7, 8, ff; but in chrome, my newly written content is actually placed in the

 tag; <p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/194/2dca1e20198ed7fa37b2e8461817f576-0.jpg" class="lazy" alt="Detailed explanation of html browser automatically adding <pre class="brush:php;toolbar:false"> tag"><br></p><p><strong>About html <pre class="brush:php;toolbar:false"> tag: <excerpted from: w3school></excerpted>

pre element can define pre-formatting ized text. Text enclosed in a pre element usually preserves whitespace and newlines. The text will also be rendered in a fixed-width font.

 A common application of tags is to represent computer source code. <p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif"><strong> Thoughts on the problem: </strong></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif">After discovering this problem, the first thing I thought of was: This should be because different browsers process code text information differently, chrome My form is displayed on the page as text. And <span style="color:#ff0000"> is not an element in html format; so I think everything should be fine once this problem is solved. </span></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px"><span style="font-family:Verdana,Arial,Helvetica,sans-serif">At this time, I thought of the setting of html</span><span style="font-family:微软雅黑,Verdana,sans-serif,宋体"><span style="font-size:14px">meta information</span></span></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif"><span style="font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="font-family:Tahoma; line-height:18px"> <meta http-equiv="<span style=" color:>Content-Type</span>" content="</span><span style="font-family:Tahoma; line-height:18px"><span style="color:#ff0000">text/html</span></span><span style="font-family:Tahoma; line-height:18px"> ;char<a href="http://www.php.cn/code/8209.html" target="_blank">set</a>=utf-8"
 /> Setting this <a href="http://www.php.cn/wiki/169.html" target="_blank">attribute</a> should solve the problem. </span><br></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif"><span style="font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="font-family:Tahoma; line-height:18px; background-color:rgb(255,255,255)">After checking the document, it suddenly became clear: </span></span></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif"><span style="font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="font-family:Tahoma; line-height:18px"></span></span></p><p style="padding-top:0px; padding-bottom:0px; margin-top:0px; margin-bottom:10px; font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="padding:0px; margin:0px; color:rgb(229,51,51)"><span style="padding:0px; margin:0px; color:rgb(0,0,0); background-color:rgb(255,255,255)">1. text/html is the text in html format </span></span></p><p style="padding-top:0px; padding-bottom:0px; margin-top:0px; margin-bottom:10px; font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="padding:0px; margin:0px; color:rgb(229,51,51)"><span style="padding:0px; margin:0px; color:rgb(0,0,0); background-color:rgb(255,255,255)">2. text/plain is unformatted Text</span></span></p><p style="padding-top:0px; padding-bottom:0px; margin-top:0px; margin-bottom:10px; font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px">3. text/xml ignores the encoding format specified by the xml header and defaults to us-ascii encoding</p><p style="padding-top:0px; padding-bottom:0px; margin-top:0px; margin-bottom:10px; font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="padding:0px; margin:0px; color:rgb(229,51,51)"><span style="padding:0px; margin:0px; color:rgb(0,0,0); background-color:rgb(255,255,255)">4. application/xml will Encode according to the encoding format specified by the xml header </span></span></p><p><strong> Solution: </strong></p><p style="margin-top:12px; margin-bottom:0px; line-height:18px; font-family:Verdana,Arial,Helvetica,sans-serif"><span style="font-family:微软雅黑,Verdana,sans-serif,宋体; font-size:14px"><span style="font-family:Tahoma; line-height:18px"></span></span></p><pre class='brush:php;toolbar:false;'>response.setHeader("Content-Type", "text/html");

The above is the detailed content of Detailed explanation of html browser automatically adding tag. For more information, please follow other related articles on the PHP Chinese website!