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    <p><strong>Depending on your exact situation, there are different XPath expressions that will select the node</strong>, whose value contains some whitespace.</p> <p>First, let us recall that any one of these characters is "whitespace":</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;<strong><code>&amp;#x09;</code></strong> -- the Tab</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;<strong><code>&amp;#xA;</code></strong> -- newline</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;<strong><code>&amp;#xD;</code></strong> -- carriage return</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;<strong><code>' '</code></strong> or <strong><code>&amp;#x20;</code></strong> -- the space</p> <p>If you know the exact value of the node, say it is "<code>Hello World</code>" with a space, then a most direct XPath expression:</p> <p>&nbsp;&nbsp;&nbsp;&nbsp; <strong><code>/top/aChild[. = 'Hello World']</code></strong></p> <p>will select this node.</p> <p><em>The difficulties with specifying a value that contains whitespace, however, come from the fact that we see all whitespace characters just as ... well, whitespace</em> and don't know if a it is a group of spaces or a single tab.</p> <p><strong>In <a href="http://www.w3.org/TR/xpath20/" rel="noreferrer">XPath 2.0</a> one may use <a href="http://www.w3.org/TR/xpath-functions/#regex-syntax" rel="noreferrer">regular expressions</a> and they provide a simple and convenient solution</strong>. Thus we can use an XPath 2.0 expression as the one below:</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;<strong><code>/*/aChild[matches(., "Hello\sWorld")]</code></strong></p> <p>to select any child of the top node, whose value is the string "Hello" followed by whitespace followed by the string "World". <strong>Note</strong> the use of the <a href="http://www.w3.org/TR/xpath-functions/#func-matches" rel="noreferrer"><strong><code>matches()</code></strong></a> function and of the "<strong><code>\s</code></strong>" pattern that matches whitespace.</p> <p><strong>In <a href="http://www.w3.org/TR/xpath" rel="noreferrer">XPath 1.0</a></strong> a convenient test if a given string contains any whitespace characters is:</p> <p><strong><code>not(string-length(.)= stringlength(translate(., ' &amp;#9;&amp;#xA;&amp;#xD;','')))</code></strong></p> <p>Here we use the <a href="http://www.w3.org/TR/xpath#function-translate" rel="noreferrer"><strong><code>translate()</code></strong></a> function to eliminate any of the four whitespace characters, and compare the length of the resulting string to that of the original string.</p> <p>So, if in a text editor a node's value is displayed as </p> <p>"Hello&nbsp;&nbsp;&nbsp;&nbsp;World", </p> <p>we can safely select this node with the XPath expression:</p> <p><strong><code>/*/aChild[translate(., ' &amp;#9;&amp;#xA;&amp;#xD;','') = 'HelloWorld']</code></strong></p> <p>In many cases we can also use the XPath function <a href="http://www.w3.org/TR/xpath#function-normalize-space" rel="noreferrer"><strong><code>normalize-space()</code></strong></a>, which from its string argument produces another string in which the groups of leading and trailing whitespace is cut, and every whitespace within the string is replaced by a single space.</p> <p>In the above case, we will simply use the following XPath expression:</p> <p><strong><code>/*/aChild[normalize-space() = 'Hello World']</code></strong></p>
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    1. USDimitre Novatchev
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    1. COXPath 1.0 workaround works great!
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      1. USKenogu Labz
    2. CO@KenoguLabz, You are welcome
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      1. USDimitre Novatchev
    3. CO@DimitreNovatchev could you give one docs where such coding list can be found such as *&#x09; -- the Tab*.
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