Travis build: 733 [ci skip]
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@ -4246,13 +4246,13 @@ isSymbol(Symbol('x')); // true
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Checks if the provided argument is a valid JSON.
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Checks if the provided argument is a valid JSON.
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Use `JSON.parse()` and a `try... catch` block to check if the provided argument is a valid JSON and non-null.
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Use `JSON.parse()` and a `try... catch` block to check if the provided argument is a valid JSON.
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```js
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```js
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const isValidJSON = obj => {
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const isValidJSON = obj => {
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try {
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try {
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JSON.parse(obj);
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JSON.parse(obj);
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return !!obj;
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return true;
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} catch (e) {
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} catch (e) {
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return false;
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return false;
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}
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}
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@ -4265,6 +4265,7 @@ const isValidJSON = obj => {
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```js
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```js
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isValidJSON('{"name":"Adam","age":20}'); // true
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isValidJSON('{"name":"Adam","age":20}'); // true
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON(null); // true
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```
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```
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</details>
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</details>
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@ -882,16 +882,17 @@ isString('10'); // true
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="issymbol">isSymbol</h3></div><div class="section double-padded"><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><pre><code class="language-js">const isSymbol = val => typeof val === 'symbol';
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="issymbol">isSymbol</h3></div><div class="section double-padded"><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><pre><code class="language-js">const isSymbol = val => typeof val === 'symbol';
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</code></pre><pre><code class="language-js">isSymbol('x'); // false
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</code></pre><pre><code class="language-js">isSymbol('x'); // false
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isSymbol(Symbol('x')); // true
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isSymbol(Symbol('x')); // true
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="isvalidjson">isValidJSON</h3></div><div class="section double-padded"><p>Checks if the provided argument is a valid JSON.</p><p>Use <code>JSON.parse()</code> and a <code>try... catch</code> block to check if the provided argument is a valid JSON and non-null.</p><pre><code class="language-js">const isValidJSON = obj => {
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="isvalidjson">isValidJSON</h3></div><div class="section double-padded"><p>Checks if the provided argument is a valid JSON.</p><p>Use <code>JSON.parse()</code> and a <code>try... catch</code> block to check if the provided argument is a valid JSON.</p><pre><code class="language-js">const isValidJSON = obj => {
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try {
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try {
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JSON.parse(obj);
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JSON.parse(obj);
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return !!obj;
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return true;
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} catch (e) {
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} catch (e) {
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return false;
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return false;
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}
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}
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};
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};
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</code></pre><pre><code class="language-js">isValidJSON('{"name":"Adam","age":20}'); // true
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</code></pre><pre><code class="language-js">isValidJSON('{"name":"Adam","age":20}'); // true
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON(null); // true
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="randomhexcolorcode">randomHexColorCode</h3></div><div class="section double-padded"><p>Generates a random hexadecimal color code.</p><p>Use <code>Math.random</code> to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using <code>toString(16)</code>.</p><pre><code class="language-js">const randomHexColorCode = () => {
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</code></pre></div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="randomhexcolorcode">randomHexColorCode</h3></div><div class="section double-padded"><p>Generates a random hexadecimal color code.</p><p>Use <code>Math.random</code> to generate a random 24-bit(6x4bits) hexadecimal number. Use bit shifting and then convert it to an hexadecimal String using <code>toString(16)</code>.</p><pre><code class="language-js">const randomHexColorCode = () => {
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let n = ((Math.random() * 0xfffff) | 0).toString(16);
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let n = ((Math.random() * 0xfffff) | 0).toString(16);
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return '#' + (n.length !== 6 ? ((Math.random() * 0xf) | 0).toString(16) + n : n);
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return '#' + (n.length !== 6 ? ((Math.random() * 0xf) | 0).toString(16) + n : n);
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@ -18,5 +18,5 @@ const isValidJSON = obj => {
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```js
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```js
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isValidJSON('{"name":"Adam","age":20}'); // true
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isValidJSON('{"name":"Adam","age":20}'); // true
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON('{"name":"Adam",age:"20"}'); // false
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isValidJSON(null) // true
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isValidJSON(null); // true
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```
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```
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