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30secondsofcode
2018-10-01 16:38:09 +00:00
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README.md
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@ -8594,7 +8594,7 @@ isPromiseLike({}); // false
### isString
Checks if the given argument is a string.
Checks if the given argument is a string. Only works for string primitives.
Use `typeof` to check if a value is classified as a string primitive.

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docs/type.html
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@ -170,7 +170,7 @@
});</span> <span class="token comment">// true</span>
<span class="token function">isPromiseLike</span><span class="token punctuation">(</span><span class="token keyword">null</span><span class="token punctuation">);</span> <span class="token comment">// false</span>
<span class="token function">isPromiseLike</span><span class="token punctuation">({});</span> <span class="token comment">// false</span>
</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="isstring">isString</h4><p>Checks if the given argument is a string.</p><p>Use <code>typeof</code> to check if a value is classified as a string primitive.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">isString</span> <span class="token operator">=</span> val <span class="token operator">=></span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'string'</span><span class="token punctuation">;</span>
</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="isstring">isString</h4><p>Checks if the given argument is a string. Only works for string primitives.</p><p>Use <code>typeof</code> to check if a value is classified as a string primitive.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">isString</span> <span class="token operator">=</span> val <span class="token operator">=></span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'string'</span><span class="token punctuation">;</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">isString</span><span class="token punctuation">(</span><span class="token string">'10'</span><span class="token punctuation">);</span> <span class="token comment">// true</span>
</pre></div><div class="card code-card"><div class="corner beginner"></div><div class="section card-content"><h4 id="issymbol">isSymbol</h4><p>Checks if the given argument is a symbol.</p><p>Use <code>typeof</code> to check if a value is classified as a symbol primitive.</p></div><div class="copy-button-container"><button class="copy-button" aria-label="Copy to clipboard"></button></div><pre class="section card-code language-js"><span class="token keyword">const</span> <span class="token function-variable function">isSymbol</span> <span class="token operator">=</span> val <span class="token operator">=></span> <span class="token keyword">typeof</span> val <span class="token operator">===</span> <span class="token string">'symbol'</span><span class="token punctuation">;</span>
</pre><label class="collapse">examples</label><pre class="section card-examples language-js"><span class="token function">isSymbol</span><span class="token punctuation">(</span><span class="token function">Symbol</span><span class="token punctuation">(</span><span class="token string">'x'</span><span class="token punctuation">));</span> <span class="token comment">// true</span>