blocks|key|2718827|text|给你：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2718828|​|2718829|var+URL+=+"http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
alert(URL.substring(0,+URL.lastIndexOf("/")+%2B+1));|code-block|syntax|javascript|2718830|2718831|希望这能有所帮助。|2718832|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

<p>Here you are:</p>

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
alert(URL.substring(0, URL.lastIndexOf("/") + 1));</code></pre>
</div>
</div>
</p>

<p>Hope this helps.</p>


blocks|key|3000436|text|对于正则表达式来说，这似乎是一个很好的例子(不敢相信还没有人发布)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3000437|URL.replace(/[%5E\/]%2B$/,'')|code-block|syntax|javascript|3000438|将所有连续的非正向斜杠字符移除到字符串的末尾(即最后/之后的所有内容)。|3000439|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

<p>Seems like a good case for a regular expression (can't believe no one has posted it yet):</p>

<pre><code>URL.replace(/[^\/]+$/,'')
</code></pre>

<p>Removes all sequential non–forward slash characters to the end of the string (i.e. everything after the last /).</p>


blocks|key|2718960|text|通用解决方案|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2718961|这是一个通用函数，当我们正在搜索的字符串中找不到搜索的字符或字符串(指针)时，它也处理边缘情况。在这种情况下，它返回原始字符串。|2718962|​|2718963|function+trimStringAfter(haystack,+needle)+{
++const+lastIndex+=+haystack.lastIndexOf(needle)
++return+haystack.substring(0,+lastIndex+===+-1+?+haystack.length+:+lastIndex+%2B+1)
}

console.log(trimStringAfter('abcd/abcd/efg/ggfbf',+'/'))+//+abcd/abcd/efg/
console.log(trimStringAfter('abcd/abcd/abcd',+'/'))+//+abcd/abcd/
console.log(trimStringAfter('abcd/abcd/',+'/'))+//+abcd/abcd/
console.log(trimStringAfter('abcd/abcd',+'/'))+//+abcd/
console.log(trimStringAfter('abcd',+'/'))+//+abcd|code-block|syntax|javascript|2718964|2718965|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|Q|8|@]|9|@]|A|$I|J]]|$1|K|3|E|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

<h2>Generic solution</h2>
<p>This is a generic function that also handles the edge case when the searched character or string (needle) is not found in the string we are searching in (haystack). It returns the original string in that case.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>function trimStringAfter(haystack, needle) {
  const lastIndex = haystack.lastIndexOf(needle)
  return haystack.substring(0, lastIndex === -1 ? haystack.length : lastIndex + 1)
}

console.log(trimStringAfter('abcd/abcd/efg/ggfbf', '/')) // abcd/abcd/efg/
console.log(trimStringAfter('abcd/abcd/abcd', '/')) // abcd/abcd/
console.log(trimStringAfter('abcd/abcd/', '/')) // abcd/abcd/
console.log(trimStringAfter('abcd/abcd', '/')) // abcd/
console.log(trimStringAfter('abcd', '/')) // abcd</code></pre>
</div>
</div>
</p>


blocks|key|3000393|text|var+URL+=+"http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";

console.log(URL.substring(0,URL.lastIndexOf('/')%2B1));
//The+%2B1+is+to+add+the+last+slash|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3000394|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";

console.log(URL.substring(0,URL.lastIndexOf('/')+1));
//The +1 is to add the last slash
</code></pre>


blocks|key|3000358|text|console.log(URL.substring(0,+URL.lastIndexOf("/")%2B1));|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|3000359|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>console.log(URL.substring(0, URL.lastIndexOf("/")+1));
</code></pre>


blocks|key|2718873|text|运行以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2718874|​|2718875|var+URL+=+"http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
var+temp+=+URL.split('/');
temp.pop();
var+result+=+temp.join('/');
alert(result);|code-block|syntax|javascript|2718876|2718877|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|K|$]]

<p>Run this:</p>

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
var temp = URL.split('/');
temp.pop();
var result = temp.join('/');
alert(result);</code></pre>
</div>
</div>
</p>


blocks|key|3000457|text|尝试利用.match()与RegExp+/%5E\w%2B.*\d%2B\//|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3000458|​|3000459|var+URL+=+"http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
var+res+=+URL.match(/%5E\w%2B.*\d%2B\//)[0];
document.body.textContent+=+res;|code-block|syntax|javascript|3000460|3000461|entityMap^0|4|8|D|6|K|D|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|X|8|@]|D|@]|E|$K|L]]|$1|M|3|G|5|6|7|Y|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|Z|8|@]|D|@]|E|$]]]|O|$]]

<p>Try utilizing <code>.match()</code> with <code>RegExp</code> <code>/^\w+.*\d+\//</code></p>

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
var res = URL.match(/^\w+.*\d+\//)[0];
document.body.textContent = res;</code></pre>
</div>
</div>
</p>


blocks|key|2718866|text|尝试基于数组的提取，如|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2718867|​|2718868|var+URL+=+"http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
snippet.log(URL.split('/').slice(0,+5).join('/'));|code-block|syntax|javascript|2718869|

<script+src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"></script>|2718870|2718871|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|K|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

<p>Try an array based extraction like</p>

<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
snippet.log(URL.split('/').slice(0, 5).join('/'));</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!-- Provides the `snippet` object, see http://meta.stackexchange.com/a/242144/134069 --&gt;
&lt;!-- To show result in the dom instead of console, only to be used in the snippet not in production --&gt;
&lt;script src="http://tjcrowder.github.io/simple-snippets-console/snippet.js"&gt;&lt;/script&gt;</code></pre>
</div>
</div>
</p>


<p>Okay I have this</p>

<pre><code>var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";
console.log(URL.substring(URL.lastIndexOf("/")));
</code></pre>

<p>Gives you "/remove-everything-before-the-last-occurrence-of-a-character"</p>

<p>How do I get "<code>http://stackoverflow.com/questions/10767815/</code>"</p>


JS remove everything after the last occurrence of a character

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。

页面排版不美观，阅读体验差。

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好的，我有这个var URL = "http://stackoverflow.com/questions/10767815/remove-everything-before-the-last-occurrence-of-a-character";console.log(URL.substring(URL.lastIndexOf("/")));给你"/remove-everything-before

问JS移除最后一次出现字符后的所有内容。
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回答 8

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问JS移除最后一次出现字符后的所有内容。
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