blocks|key|1695142|text|这类似于When+did+single+quotes+in+HTML+become+so+popular?。在超文本标记语言中，属性两边的单引号一直是the+specification允许的。我不认为任何浏览器不会理解它们。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1695143|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/242766/when-did-single-quotes-in-html-become-so-popular|1|http://www.w3.org/TR/html4/intro/sgmltut.html#h-3.2.2^0|4|1D|0|23|H|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

<p>This is similar to <a href="https://stackoverflow.com/questions/242766/when-did-single-quotes-in-html-become-so-popular">When did single quotes in HTML become so popular?</a>. Single quotes around attributes in HTML are and always have been permitted by <a href="http://www.w3.org/TR/html4/intro/sgmltut.html#h-3.2.2" rel="noreferrer">the specification</a>. I don't think any browsers wouldn't understand them.</p>


blocks|key|1479992|text|我也倾向于在HTML中使用单引号，而且我从来没有遇到过问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1479993|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

<p>I also tend to use single quotes in HTML and I have never experienced a problem.</p>


blocks|key|1695254|text|单引号对于HTML来说很好，但是它们不能构成有效的XHTML，如果任何人使用的浏览器只支持XHTML，而不支持HTML，这可能会有问题。我不相信有这样的浏览器存在，尽管可能有一些用户代理确实需要严格的XHTML。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1695255|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

<p>Single Quotes are fine for HTML, but they don't make valid XHTML, which might be problematic if anybody was using a browser which supported only XHTML, but not HTML.  I don't believe any such browsers exist, though there are probably some User-Agents out there that do require strict XHTML.  </p>


blocks|key|1695298|text|不要相信你在网上看到的一切。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1695299|有趣的是，我刚刚回答了类似于有人声明单引号在XHTML中无效的问题……|1695300|嗯，我一边打字一边看上面的内容，看到Adam+N传播了同样的信念。如果他能支持他的肯定，我就收回我写的.AFAIK，XML是不可知的，并接受这两种类型的引用。我甚至尝试并验证了一个只有单引号的XHTML页面，没有问题。|1695301|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

<p>Don't believe everything you see on Internet...<br>
Funnily, I just answered something similar to somebody declaring single quotes are not valid in XHTML...</p>

<p>Mmm, I look above while typing, and see that Adam N propagates the same belief. If he can back up his affirmation, I retract what I wrote... AFAIK, XML is agnostic and accepts both kinds of quote. I even tried and validated without problem an XHTML page with only single quotes.</p>


blocks|key|1695370|text|正如PhiLho所指出的，尽管人们普遍认为属性值不允许使用单引号，但这种看法是错误的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1695371|XML+standard允许在属性值两边使用单引号和双引号。|offset|length|1695372|XHTML标准没有说明任何要改变这一点的内容，但是相关的一节指出attribute+values+must+be+quoted在示例中使用了双引号，这可能导致了这种混乱。这个示例只是指出XHTML中的属性值必须满足XML中属性值的最低标准，这意味着它们必须用引号括起来(与普通HTML相反，后者并不关心)，但不会限制您使用单引号或双引号。|1695373|当然，您总是有可能遇到不符合标准的解析器，但当这种情况发生时，所有的赌注都会落空。因此，最好的做法就是坚持规范所说的内容。毕竟，这就是我们有规范的原因。|1695374|entityMap|0|LINK|mutability|MUTABLE|url|http://www.w3.org/TR/REC-xml/#NT-AttValue|1|http://www.w3.org/TR/xhtml1/#h-4.4^0|0|0|C|0|0|W|V|1|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@$D|Z|E|10|1|11]]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]|R|$5|M|N|O|A|$P|S]]]]

<p>As noted by PhiLho, although there is a widely spread belief that single quotes are not allowed for attribute values, that belief is wrong.</p>

<p>The <a href="http://www.w3.org/TR/REC-xml/#NT-AttValue" rel="noreferrer">XML standard</a> permits both single and double quotes around attribute values.</p>

<p>The XHTML standard doesn't say anything to change this, but a related section which states that <a href="http://www.w3.org/TR/xhtml1/#h-4.4" rel="noreferrer">attribute values must be quoted</a> uses double quotes in the example, which has probably lead to this confusion.  This example is merely pointing out that attribute values in XHTML must meet the minimum standard for attribute values in XML, which means they must be quoted (as opposed to plain HTML which doesn't care), but does not restrict you to either single or double quotes.</p>

<p>Of course, it's always possible that you'll encounter a parser which isn't standards-compliant, but when that happens all bets are off anyway.  So it's best to just stick to what the specification says.  That's why we have specifications, after all.</p>


blocks|key|1480226|text|唯一的问题是数据进入文本输入字段。考虑一下|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1480227|<input+value='it's+gonna+break'/>|code-block|syntax|javascript|1480228|同上：|1480229|<input+value="i+say+-+"this+is+gonna+be+trouble"+"/>|1480230|你不能逃避它，你必须使用htmlspecialchars。|offset|length|style|CODE|1480231|entityMap|0|LINK|mutability|MUTABLE|url|https://www.php.net/manual/en/function.htmlspecialchars.php^0|0|0|0|0|C|G|C|G|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@$M|13|N|14|O|P]]|9|@$M|15|N|16|1|17]]|A|$]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

<p>Only problem is data going into TEXT INPUT fields. Consider</p>
<pre><code>&lt;input value='it's gonna break'/&gt;
</code></pre>
<p>Same with:</p>
<pre><code>&lt;input value=&quot;i say - &quot;this is gonna be trouble&quot; &quot;/&gt;
</code></pre>
<p>You can't escape that, you have to use <a href="https://www.php.net/manual/en/function.htmlspecialchars.php" rel="nofollow noreferrer"><code>htmlspecialchars</code></a>.</p>


blocks|key|1695487|text|..。或者只使用heredocs。那么你就不需要担心除了END之外的任何东西了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1695488|entityMap^0|S|3|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

<p>... or just use heredocs. Then you don't need to worry about escaping anything but <code>END</code>.</p>


blocks|key|1695570|text|我在HTML页面中使用了单引号，并将JavaScripts嵌入其中，它工作得很好。在IE9，Chrome和火狐上测试过--看起来运行良好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1695571|<!DOCTYPE+html>
<html>
++++<head>
++++++++<meta+charset='utf-8'>
++++++++<meta+http-equiv='X-UA-Compatible'+content='IE=edge,chrome=1'>
++++++++<title>Bethanie+Inc.+data+:+geographically+linked</title>
++++++++<script+src='http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'></script>
++++++++<script+src='https://maps.googleapis.com/maps/api/js?v=3.11&sensor=false'+type='text/javascript'></script>
++++++++<script+type='text/javascript'>+
++++++++//+check+DOM+Ready
++++++++$(document).ready(function()+{
++++++++++++//+execute
++++++++++++(function()+{
++++++++++++++++///////////////+Addresses+///////////////////
++++++++++++++++var+locations+=+new+Array();
++++++++++++++++var+i+=+0;
++++++++++++++++locations[i%2B%2B]+=+'L,Riversea:+Comp+Site1+at+Riversea,1+Wallace+Lane+Mosman+Park+WA+6012'
++++++++++++++++locations[i%2B%2B]+=+'L,Wearne:+Comp+Site2+at+Wearne,1+Gibney+St+Cottesloe+WA+6011'
++++++++++++++++locations[i%2B%2B]+=+'L,Beachside:Comp+Site3+Beachside,629+Two+Rocks+Rd+Yanchep+WA+6035'

++++++++++++++++///////+Addresses/////////
++++++++++++++++var+total_locations+=+i;
++++++++++++++++i+=+0;
++++++++++++++++console.log('About+to+look+up+'+%2B+total_locations+%2B+'+locations');
++++++++++++++++//+map+options
++++++++++++++++var+options+=+{
++++++++++++++++++++zoom:+10,
++++++++++++++++++++center:+new+google.maps.LatLng(-31.982484,+115.789329),//Bethanie++
++++++++++++++++++++mapTypeId:+google.maps.MapTypeId.ROADMAP,
++++++++++++++++++++mapTypeControl:+true
++++++++++++++++};
++++++++++++++++//+init+map
++++++++++++++++console.log('Initialise+map...');
++++++++++++++++var+map+=+new+google.maps.Map(document.getElementById('map_canvas'),+options);
+++++++++++++++//+use+the+Google+API+to+translate+addresses+to+GPS+coordinates+
+++++++++++++++//(See+Limits:+https://developers.google.com/maps/documentation/geocoding/#Limits)
++++++++++++++++var+geocoder+=+new+google.maps.Geocoder();
++++++++++++++++if+(geocoder)+{
++++++++++++++++++++console.log('Got+a+new+instance+of+Google+Geocoder+object');
++++++++++++++++++++//+Call+function+'createNextMarker'+every+second
++++++++++++++++++++var+myVar+=+window.setInterval(function(){createNextMarker()},+700);
++++++++++++++++++++function+createNextMarker()+{
++++++++++++++++++++++++if+(i+<+locations.length)+
+++++++++++++++++++++++{
++++++++++++++++++++++++++++var+customer+=+locations[i];
++++++++++++++++++++++++++++var+parts+=+customer.split(',');+//+split+line+into+parts+(fields)
++++++++++++++++++++++++++++var+type=+parts.splice(0,1);++++//+type+from+location+line+(remove)
++++++++++++++++++++++++++++var+name+=+parts.splice(0,1);++++//+name+from+location+line(remove)
++++++++++++++++++++++++++++var+address+=parts.join(',');+++//+combine+remaining+parts
++++++++++++++++++++++++++++console.log('Looking+up+'+%2B+name+%2B+'+at+address+'+%2B+address);
++++++++++++++++++++++++++++geocoder.geocode({+'address':+address+},+makeCallback(name,+type));
++++++++++++++++++++++++++++i%2B%2B;+//+next+location+in+list
++++++++++++++++++++++++++++updateProgressBar(i+/+total_locations);


++++++++++++++++++++++++}+else+
+++++++++++++++++++++++{
++++++++++++++++++++++++++++console.log('Ready+looking+up+'+%2B+i+%2B+'+addresses');
++++++++++++++++++++++++++++window.clearInterval(myVar);
++++++++++++++++++++++++}
++++++++++++++++++++}

++++++++++++++++++++function+makeCallback(name,type)+
+++++++++++++++++++{
++++++++++++++++++++++++var+geocodeCallBack+=+function+(results,+status)+{
++++++++++++++++++++++++++++if+(status+==+google.maps.GeocoderStatus.OK)+{
++++++++++++++++++++++++++++++++var+longitude+=+results[0].geometry.location.lng();
++++++++++++++++++++++++++++++++var+latitude+=+results[0].geometry.location.lat();
++++++++++++++++++++++++++++++++console.log('Received+result:+lat:'+%2B+latitude+%2B+'+long:'+%2B+longitude);
++++++++++++++++++++++++++++++++var+marker+=+new+google.maps.Marker({
++++++++++++++++++++++++++++++++++++position:+new+google.maps.LatLng(latitude,+longitude),
++++++++++++++++++++++++++++++++++++map:+map,
++++++++++++++++++++++++++++++++++++title:+name+%2B+'+:+'+%2B+'\r\n'+%2B+results[0].formatted_address});//+this+is+display+in+tool+tip/+icon+color
+++++++++++++++++++++++++++++++++++if+(type=='E')++{marker.setIcon('http://maps.google.com/mapfiles/ms/icons/green-dot.png')};|code-block|syntax|javascript|1695572|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>I used single quotes in HTML pages and embedded JavaScripts into it and its works fine. Tested in IE9, Chrome and Firefox - seems working fine. </p>

<pre><code>&lt;!DOCTYPE html&gt;
&lt;html&gt;
    &lt;head&gt;
        &lt;meta charset='utf-8'&gt;
        &lt;meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1'&gt;
        &lt;title&gt;Bethanie Inc. data : geographically linked&lt;/title&gt;
        &lt;script src='http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js'&gt;&lt;/script&gt;
        &lt;script src='https://maps.googleapis.com/maps/api/js?v=3.11&amp;sensor=false' type='text/javascript'&gt;&lt;/script&gt;
        &lt;script type='text/javascript'&gt; 
        // check DOM Ready
        $(document).ready(function() {
            // execute
            (function() {
                /////////////// Addresses ///////////////////
                var locations = new Array();
                var i = 0;
                locations[i++] = 'L,Riversea: Comp Site1 at Riversea,1 Wallace Lane Mosman Park WA 6012'
                locations[i++] = 'L,Wearne: Comp Site2 at Wearne,1 Gibney St Cottesloe WA 6011'
                locations[i++] = 'L,Beachside:Comp Site3 Beachside,629 Two Rocks Rd Yanchep WA 6035'

                /////// Addresses/////////
                var total_locations = i;
                i = 0;
                console.log('About to look up ' + total_locations + ' locations');
                // map options
                var options = {
                    zoom: 10,
                    center: new google.maps.LatLng(-31.982484, 115.789329),//Bethanie  
                    mapTypeId: google.maps.MapTypeId.ROADMAP,
                    mapTypeControl: true
                };
                // init map
                console.log('Initialise map...');
                var map = new google.maps.Map(document.getElementById('map_canvas'), options);
               // use the Google API to translate addresses to GPS coordinates 
               //(See Limits: https://developers.google.com/maps/documentation/geocoding/#Limits)
                var geocoder = new google.maps.Geocoder();
                if (geocoder) {
                    console.log('Got a new instance of Google Geocoder object');
                    // Call function 'createNextMarker' every second
                    var myVar = window.setInterval(function(){createNextMarker()}, 700);
                    function createNextMarker() {
                        if (i &lt; locations.length) 
                       {
                            var customer = locations[i];
                            var parts = customer.split(','); // split line into parts (fields)
                            var type= parts.splice(0,1);    // type from location line (remove)
                            var name = parts.splice(0,1);    // name from location line(remove)
                            var address =parts.join(',');   // combine remaining parts
                            console.log('Looking up ' + name + ' at address ' + address);
                            geocoder.geocode({ 'address': address }, makeCallback(name, type));
                            i++; // next location in list
                            updateProgressBar(i / total_locations);


                        } else 
                       {
                            console.log('Ready looking up ' + i + ' addresses');
                            window.clearInterval(myVar);
                        }
                    }

                    function makeCallback(name,type) 
                   {
                        var geocodeCallBack = function (results, status) {
                            if (status == google.maps.GeocoderStatus.OK) {
                                var longitude = results[0].geometry.location.lng();
                                var latitude = results[0].geometry.location.lat();
                                console.log('Received result: lat:' + latitude + ' long:' + longitude);
                                var marker = new google.maps.Marker({
                                    position: new google.maps.LatLng(latitude, longitude),
                                    map: map,
                                    title: name + ' : ' + '\r\n' + results[0].formatted_address});// this is display in tool tip/ icon color
                                   if (type=='E')  {marker.setIcon('http://maps.google.com/mapfiles/ms/icons/green-dot.png')};
</code></pre>


blocks|key|1695629|text|最近我遇到了一个谷歌搜索优化的问题。如果有一个单引号，它似乎不会抓取链接的页面。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1695630|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

<p>Recently i've experienced a problem with Google Search optimization. If    has a single quotes, it doesn't seem to crawl linked pages. </p>


<p>I am a big time user of using double quotes in PHP so that I can interpolate variables rather than concatenating strings. As a result, when I am generating HTML I often use single quotes for setting tag fields. For example:</p>

<pre><code>$html = "&lt;input type='text' name='address' value='$address'&gt;";
</code></pre>

<p>Now this is far more readable to me than either</p>

<pre><code>$html = "&lt;input type=\"text\" name=\"address\" value=\"$address\"&gt;";
</code></pre>

<p>or</p>

<pre><code>$html = '&lt;input type="text" name="address" values="' . $address . '"&gt;' ;
</code></pre>

<p>From brief searches I have heard people saying that single quotes for HTML fields is not recognized by EVERY browser. Thus I am wondering what browsers would have problems recognizing single quote HTML?</p>


Are single quotes allowed in HTML?

我经常在PHP中使用双引号，这样我就可以插入变量而不是连接字符串。因此，当我生成HTML时，我经常使用单引号来设置标记字段。例如：$html = "<input type='text' name='address' value='$address'>";现在，这对我来说要比$html = "<input type=\"...

问HTML中允许使用单引号吗？
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