blocks|key|909219|text|一种优雅而简短的替代方法是String.prototype.slice方法。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|909220|只需：|909221|str.slice(-1);|code-block|syntax|javascript|909222|负起始索引将字符串从length%2Bindex切片到length，作为索引-1，最后一个字符被提取出来：|909223|"abc".slice(-1);+//+"c";|909224|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice^0|D|M|D|M|0|0|0|0|A|C|P|6|10|2|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|16|8|@$9|17|A|18|B|C]|$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

<p>An elegant and short alternative, is the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice" rel="noreferrer"><code>String.prototype.slice</code></a> method.</p>

<p>Just by:</p>

<pre><code>str.slice(-1);
</code></pre>

<p>A negative start index slices the string from <code>length+index</code>, to <code>length</code>, being index <code>-1</code>, the last character is extracted:</p>

<pre><code>"abc".slice(-1); // "c";
</code></pre>


blocks|key|1124011|text|str.charAt(str.length+-+1)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1124012|一些浏览器允许(作为非标准扩展)将其缩短为：|unstyled|1124013|str[str.length+-+1];|1124014|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|L|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|I|3|-4|5|F|7|N|8|@]|9|@]|A|$]]]|J|$]]

<pre><code>str.charAt(str.length - 1)
</code></pre>

<p>Some browsers allow (as a non-standard extension) you to shorten this to:</p>

<pre><code>str[str.length - 1];
</code></pre>


blocks|key|909398|text|一种简单的方法是使用下面的代码:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|909399|var+word+=+"waffle"
word.endsWith("e")|code-block|syntax|javascript|909400|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>An easy way of doing it is using this :)</p>

<pre><code>var word = "waffle"
word.endsWith("e")
</code></pre>


blocks|key|1124265|text|试试这个。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1124266|const+str+=+"linto.yahoo.com."
console.log(str.charAt(str.length-1));|code-block|syntax|javascript|1124267|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>Try this...</p>
<pre><code>const str = &quot;linto.yahoo.com.&quot;
console.log(str.charAt(str.length-1));
</code></pre>


blocks|key|1124059|text|你可以像这样得到最后一个字符：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1124060|var+lastChar=yourString.charAt(yourString.length-1);|code-block|syntax|javascript|1124061|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>You can get the last char like this :</p>

<pre><code>var lastChar=yourString.charAt(yourString.length-1);
</code></pre>


blocks|key|1124139|text|使用JavaScript+charAt函数获取给定0索引位置的字符。使用length找出字符串的长度。您想要最后一个字符，因此长度为-+1。示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1124140|var+word+=+"linto.yahoo.com.";
var+last+=+word.charAt(word.length+-+1);
alert('The+last+character+is:'+%2B+last);|code-block|syntax|javascript|1124141|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en/JavaScript/Reference/global_objects/string/charat|1|https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/length^0|D|6|0|10|6|1|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|F|7|Z|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]|Q|$5|L|M|N|C|$O|R]]]]

<p>Use the JavaScript <a href="https://developer.mozilla.org/en/JavaScript/Reference/global_objects/string/charat" rel="nofollow">charAt</a> function to get a character at a given 0-indexed position. Use <a href="https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/length" rel="nofollow">length</a> to find out how long the String is. You want the last character so that's length - 1. 
Example:</p>

<pre><code>var word = "linto.yahoo.com.";
var last = word.charAt(word.length - 1);
alert('The last character is:' + last);
</code></pre>


blocks|key|909226|text|var+firstName+=+"Ada";
var+lastLetterOfFirstName+=+firstName[firstName.length+-+1];|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|909227|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 firstName = "Ada";
var lastLetterOfFirstName = firstName[firstName.length - 1];
</code></pre>


blocks|key|1124551|text|如果您已经或正在使用lodash，请改用last：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1124552|_.last(str);|code-block|syntax|javascript|1124553|它不仅比普通的JS更简洁和明显，而且更安全，因为当输入是null或undefined时，它避免了Uncaught+TypeError:+Cannot+read+property+X+of+undefined，所以你不需要事先检查：|style|CODE|1124554|//+Will+throws+Uncaught+TypeError+if+str+is+null+or+undefined
str.slice(-1);+//+
str.charAt(str.length+-1);

//+Returns+undefined+when+str+is+null+or+undefined
_.last(str);|1124555|entityMap|0|LINK|mutability|MUTABLE|url|https://lodash.com/docs/latest#last^0|K|4|0|0|0|S|4|X|9|1C|1J|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|11|8|@$A|12|B|13|K|L]|$A|14|B|15|K|L]|$A|16|B|17|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|18|8|@]|9|@]|C|$G|H]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

<p>If you have or are already using lodash, use <a href="https://lodash.com/docs/latest#last" rel="nofollow noreferrer">last</a> instead:</p>
<pre><code>_.last(str);
</code></pre>
<p>Not only is it more concise and obvious than the vanilla JS, it also safer since it avoids <code>Uncaught TypeError: Cannot read property X of undefined</code> when the input is <code>null</code> or <code>undefined</code> so you don't need to check this beforehand:</p>
<pre class="lang-js prettyprint-override"><code>// Will throws Uncaught TypeError if str is null or undefined
str.slice(-1); // 
str.charAt(str.length -1);

// Returns undefined when str is null or undefined
_.last(str);
</code></pre>


blocks|key|1124301|text|您可以使用以下代码。在最后一个字符的情况下，这是一种过度杀伤力，但对于子字符串，它很有用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1124302|var+word+=+"linto.yahoo.com.";
var+last+=+".com.";
if+(word.substr(-(last.length))+==+last)
alert("its+a+match");|code-block|syntax|javascript|1124303|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>You can use the following. In this case of last character it's an overkill but for a substring, its useful:    </p>

<pre><code>var word = "linto.yahoo.com.";
var last = ".com.";
if (word.substr(-(last.length)) == last)
alert("its a match");
</code></pre>


blocks|key|909636|text|使用String.prototype.at()方法是实现该目标的一种新方法|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|909637|​|909638|const+s+=+"linto.yahoo.com.";
const+last+=+s.at(-1);

console.log(last);|code-block|syntax|javascript|909639|909640|阅读有关at+here的更多信息|909641|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/at^0|2|L|0|0|0|0|4|2|7|4|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|10|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|11|8|@]|D|@]|E|$K|L]]|$1|M|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@$9|16|A|17|1|18]]|E|$]]|$1|P|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|Q|$R|$5|S|T|U|E|$V|W]]]]

<p>Using the <code>String.prototype.at()</code> method is a new way to achieve it</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>const s = "linto.yahoo.com.";
const last = s.at(-1);

console.log(last);</code></pre>
</div>
</div>
</p>
<p>Read more about <code>at</code> <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/at" rel="nofollow noreferrer">here</a></p>


blocks|key|1124480|text|您可以使用这个简单的ES6方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1124481|​|1124482|const+lastChar+=+(str)+=>+str.split('').reverse().join(',').replace(',',+'')[str.length+===+str.length+%2B+1+?+1+:+0];


//+example
console.log(lastChar("linto.yahoo.com."));|code-block|syntax|javascript|1124483|1124484|这将在每个浏览器中工作。|1124485|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>You can use this simple ES6 method</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>const lastChar = (str) =&gt; str.split('').reverse().join(',').replace(',', '')[str.length === str.length + 1 ? 1 : 0];


// example
console.log(lastChar("linto.yahoo.com."));</code></pre>
</div>
</div>
</p>

<p>This will work in every browsers.</p>


blocks|key|1124565|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1124566|var+string+=+"Hello";
var+fg+=+string.length;
fg+=+fg+-+1;
alert(string[fg]);|code-block|syntax|javascript|1124567|1124568|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|K|8|@]|9|@]|A|$E|F]]|$1|G|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|M|8|@]|9|@]|A|$]]]|I|$]]

<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>var string = "Hello";
var fg = string.length;
fg = fg - 1;
alert(string[fg]);</code></pre>
</div>
</div>
</p>


<p>How to get the last character of the string:</p>

<pre><code>"linto.yahoo.com."
</code></pre>

<p>The last character of this string is <code>"."</code></p>

<p>How can I find this?</p>


how to get the last character of a string?

如何获取字符串的最后一个字符："linto.yahoo.com."该字符串的最后一个字符是"."我怎么才能找到这个？

问如何获取字符串的最后一个字符？
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问如何获取字符串的最后一个字符？
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