{"id":168848,"date":"2024-05-08T16:32:53","date_gmt":"2024-05-08T08:32:53","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168848.html"},"modified":"2024-05-08T16:33:01","modified_gmt":"2024-05-08T08:33:01","slug":"javascript-%e9%a1%b9%e7%9b%ae%e5%a6%82%e4%bd%95%e5%b0%86%e6%95%b0%e5%ad%97%e8%bd%ac%e4%b8%ba-16-%e8%bf%9b%e5%88%b6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168848.html","title":{"rendered":"javascript \u9879\u76ee\u5982\u4f55\u5c06\u6570\u5b57\u8f6c\u4e3a 16 \u8fdb\u5236"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27035121\/b5f041b8-222c-4919-86f3-a563aa3d9070.webp\" alt=\"javascript \u9879\u76ee\u5982\u4f55\u5c06\u6570\u5b57\u8f6c\u4e3a 16 \u8fdb\u5236\" \/><\/p>\n<p><p>JavaScript\u9879\u76ee\u4e2d\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a16\u8fdb\u5236\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5185\u7f6e\u7684<code>toString()<\/code>\u65b9\u6cd5\u3001<code>String<\/code>\u51fd\u6570\u4ee5\u53ca\u683c\u5f0f\u5316\u65b9\u6cd5\u8fdb\u884c\u64cd\u4f5c\u3002<strong>\u4f7f\u7528<code>toString()<\/code>\u65b9\u6cd5\u662f\u6700\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u5f0f<\/strong>\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u8868\u793a\u8981\u8f6c\u6362\u6210\u7684\u8fdb\u5236\u6570\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4f4d\u8fd0\u7b97\u6216\u8005\u5176\u4ed6\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u5b9e\u73b0\u8fd9\u79cd\u8f6c\u6362\u3002\u5728JavaScript\u4e2d\uff0c\u5f53\u60a8\u9700\u8981\u5728\u6570\u5b57\u4e0e\u4e0d\u540c\u8fdb\u5236\u4e4b\u95f4\u8f6c\u6362\u65f6\uff0c\u9700\u8981\u786e\u4fdd\u8f6c\u6362\u7684\u6b63\u786e\u6027\u4e0e\u6548\u7387\u3002<\/p>\n<\/p>\n<p><p>\u5bf9\u4e8e<code>toString()<\/code>\u65b9\u6cd5\uff0c\u60a8\u53ea\u9700\u8981\u8c03\u7528\u6570\u5b57\u5bf9\u8c61\u7684\u8fd9\u4e2a\u65b9\u6cd5\u5e76\u4f20\u5165\u53c2\u657016\uff0c\u5373\u53ef\u76f4\u63a5\u5f97\u5230\u8be5\u6570\u5b57\u768416\u8fdb\u5236\u5f62\u5f0f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u4e2a\u5341\u8fdb\u5236\u6570255\uff0c<code>255.toString(16)<\/code>\u5c06\u8fd4\u56de\u5b57\u7b26\u4e32&quot;ff&quot;\u3002\u8fd9\u662f\u56e0\u4e3a\u572816\u8fdb\u5236\u4e2d\uff0c&quot;f&quot;\u4ee3\u8868\u4e86\u5341\u8fdb\u5236\u768415\uff0c\u800c255\u7b49\u4e8e16\u76841\u500d\u768415\u52a0\u4e0a16\u76840\u6b21\u65b9\u768415\uff0c\u5373<code>ff<\/code>\u3002\u6b64\u65b9\u6cd5\u7b80\u5355\u3001\u6613\u7528\uff0c\u5e76\u4e14\u76f4\u63a5\u5229\u7528\u4e86JavaScript\u8bed\u8a00\u63d0\u4f9b\u7684\u5185\u5efa\u529f\u80fd\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528toString()\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u8981\u5c06\u4e00\u4e2aJavaScript\u4e2d\u7684\u6570\u5b57\u8f6c\u6362\u4e3a16\u8fdb\u5236\uff0c\u4f7f\u7528<code>toString()<\/code>\u65b9\u6cd5\u662f\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f8b\u5b50\u5c55\u793a\u4e86\u5982\u4f55\u64cd\u4f5c\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">let number = 255;<\/p>\n<p>let hexString = number.toString(16);<\/p>\n<p>console.log(hexString); \/\/ \u8f93\u51fa &quot;ff&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a<code>number<\/code>\u7684\u53d8\u91cf\uff0c\u5b83\u5b58\u50a8\u4e86\u4e00\u4e2a\u5341\u8fdb\u5236\u6570255\u3002\u6211\u4eec\u8c03\u7528\u8fd9\u4e2a\u6570\u7684<code>toString()<\/code>\u65b9\u6cd5\uff0c\u5e76\u4f20\u9012\u4e00\u4e2a\u53c2\u657016\u7ed9\u5b83\uff0c\u544a\u8bc9JavaScript\u6211\u4eec\u60f3\u5c06\u8fd9\u4e2a\u6570\u8f6c\u6362\u4e3a\u4e00\u4e2a\u57fa\u6570\u4e3a16\u7684\u6570\u3002\u7136\u540e\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u8fd4\u56de\u6570\u5b57\u768416\u8fdb\u5236\u5f62\u5f0f\uff0c\u5e76\u5b58\u50a8\u5728<code>hexString<\/code>\u53d8\u91cf\u4e2d\u3002\u5728\u63a7\u5236\u53f0\u4e2d\u6253\u5370<code>hexString<\/code>\u65f6\uff0c\u663e\u793a\u7684\u662f\u201cff\u201d\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u4f4d\u8fd0\u7b97\u7b26\u548c\u81ea\u5b9a\u4e49\u8f6c\u6362\u51fd\u6570<\/h3>\n<\/p>\n<p><p>\u60a8\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4f4d\u8fd0\u7b97\u7b26\u6765\u624b\u52a8\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a16\u8fdb\u5236\u5b57\u7b26\u4e32\u3002\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u8f83\u4e3a\u590d\u6742\u4e14\u5bb9\u6613\u51fa\u9519\uff0c\u56e0\u6b64\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4e0d\u592a\u5e38\u7528\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u63a8\u8350\u4f7f\u7528<code>toString()<\/code>\u65b9\u6cd5\uff0c\u4e0d\u4ec5\u56e0\u4e3a\u8fd9\u662fJavaScript\u81ea\u5e26\u7684\u65b9\u6cd5\uff0c\u800c\u4e14\u56e0\u4e3a\u5b83\u505a\u4e86\u5f88\u591a\u5e95\u5c42\u7684\u4f18\u5316\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u8f6c\u6362\u7684\u901f\u5ea6\u548c\u51c6\u786e\u5ea6\u3002<\/p>\n<\/p>\n<p><p>\u5982\u679c\u9879\u76ee\u6709\u7279\u522b\u7684\u9700\u6c42\uff0c\u4e0d\u80fd\u4f7f\u7528\u5185\u5efa\u65b9\u6cd5\uff0c\u6216\u8005\u9700\u8981\u5bf9\u8f6c\u6362\u8fc7\u7a0b\u8fdb\u884c\u7279\u5b9a\u7684\u63a7\u5236\u548c\u4f18\u5316\uff0c\u53ef\u4ee5\u8003\u8651\u7f16\u5199\u81ea\u5b9a\u4e49\u7684\u8f6c\u6362\u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u8f6c\u6362\u51fd\u6570\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function decimalToHexString(number) {<\/p>\n<p>    if (number &lt; 0) {<\/p>\n<p>        number = 0xFFFFFFFF + number + 1;<\/p>\n<p>    }<\/p>\n<p>    return number.toString(16).toUpperCase();<\/p>\n<p>}<\/p>\n<p>let number = 255;<\/p>\n<p>let hexString = decimalToHexString(number);<\/p>\n<p>console.log(hexString); \/\/ \u8f93\u51fa &quot;FF&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a<code>decimalToHexString<\/code>\u7684\u51fd\u6570\uff0c\u5b83\u5c06\u63a5\u6536\u4e00\u4e2a\u5341\u8fdb\u5236\u6570\u4f5c\u4e3a\u53c2\u6570\u3002\u51fd\u6570\u5185\u90e8\u9996\u5148\u68c0\u67e5\u8fd9\u4e2a\u5341\u8fdb\u5236\u6570\u662f\u5426\u5c0f\u4e8e0\uff0c\u5982\u679c\u662f\uff0c\u5219\u5c06\u5176\u8f6c\u6362\u4e3a\u7b49\u6548\u768432\u4f4d\u65e0\u7b26\u53f7\u6574\u6570\u3002\u7136\u540e\uff0c\u8c03\u7528<code>number.toString(16)<\/code>\u6765\u83b7\u53d6\u5b83\u768416\u8fdb\u5236\u5f62\u5f0f\uff0c\u5e76\u901a\u8fc7<code>toUpperCase()<\/code>\u65b9\u6cd5\u8f6c\u6362\u4e3a\u5927\u5199\u5b57\u6bcd\uff0c\u5f97\u5230\u5e38\u89c1\u768416\u8fdb\u5236\u6570\u7684\u8868\u793a\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u683c\u5f0f\u5316\u8f93\u51fa<\/h3>\n<\/p>\n<p><p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u6309\u7167\u7279\u5b9a\u7684\u683c\u5f0f\u6765\u8f93\u51fa16\u8fdb\u5236\u6570\u3002\u8fd9\u6d89\u53ca\u5230\u5b57\u7b26\u4e32\u7684\u5904\u7406\uff0c\u6bd4\u5982\u6dfb\u52a0\u524d\u7f00\u3001\u786e\u4fdd\u8f93\u51fa\u7684\u5b57\u7b26\u4e32\u957f\u5ea6\u4e00\u81f4\u7b49\u3002\u4e0b\u9762\u5c55\u793a\u4e86\u5982\u4f55\u683c\u5f0f\u5316\u8f93\u51fa\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-javascript\">function toHexString(number, width) {<\/p>\n<p>    let hexString = number.toString(16);<\/p>\n<p>    return hexString.padStart(width, &#039;0&#039;).toUpperCase();<\/p>\n<p>}<\/p>\n<p>let number = 255;<\/p>\n<p>let formattedHexString = toHexString(number, 4);<\/p>\n<p>console.log(formattedHexString); \/\/ \u8f93\u51fa &quot;00FF&quot;<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86<code>padStart()<\/code>\u5b57\u7b26\u4e32\u65b9\u6cd5\u6765\u786e\u4fdd\u8f93\u51fa\u768416\u8fdb\u5236\u5b57\u7b26\u4e32\u957f\u5ea6\u4e00\u81f4\u3002\u5982\u679c\u539f\u59cb\u768416\u8fdb\u5236\u5b57\u7b26\u4e32\u957f\u5ea6\u4e0d\u8db3<code>width<\/code>\u53c2\u6570\u6307\u5b9a\u7684\u5bbd\u5ea6\uff0c<code>padStart()<\/code>\u4f1a\u5728\u5b57\u7b26\u4e32\u7684\u5de6\u4fa7\u586b\u5145&#039;0&#039;\u76f4\u5230\u5176\u8fbe\u5230\u76f8\u5e94\u7684\u5bbd\u5ea6\u3002<code>toUpperCase()<\/code>\u65b9\u6cd5\u5219\u53ef\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5927\u5199\u683c\u5f0f\uff0c\u5bf9\u4e8e16\u8fdb\u5236\u6570\u800c\u8a00\uff0c\u5927\u5199\u683c\u5f0f\u66f4\u4e3a\u5e38\u89c1\u548c\u6807\u51c6\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u8fdb\u9636\u64cd\u4f5c\u548c\u6027\u80fd\u8003\u8651<\/h3>\n<\/p>\n<p><p>\u5f53\u8fdb\u884c\u5927\u91cf\u6216\u8005\u590d\u6742\u7684\u6570\u5b57\u523016\u8fdb\u5236\u7684\u8f6c\u6362\u65f6\uff0c\u9700\u8981\u8003\u8651\u6027\u80fd\u548c\u4f18\u5316\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u5faa\u73af\u6216\u9012\u5f52\u6765\u5904\u7406\u5927\u578b\u6570\u7ec4\u4e2d\u7684\u6570\u5b57\u8f6c\u6362\uff0c\u6216\u8005\u5728\u5b9e\u65f6\u7cfb\u7edf\u4e2d\u8fdb\u884c\u8f6c\u6362\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u5ba1\u614e\u8003\u8651\u4f7f\u7528\u54ea\u79cd\u65b9\u6cd5\uff0c\u5e76\u5bf9\u5176\u8fdb\u884c\u9002\u5f53\u7684\u4f18\u5316\u3002\u901a\u5e38\uff0c\u5185\u5efa\u7684\u65b9\u6cd5\u5982<code>toString()<\/code>\u4f1a\u5f97\u5230\u4f18\u5316\uff0c\u662f\u9996\u9009\u65b9\u6cd5\u3002<\/p>\n<\/p>\n<p><p>\u5982\u679c\u9047\u5230\u6027\u80fd\u74f6\u9888\uff0c\u53ef\u4ee5\u8003\u8651\u4ee5\u4e0b\u51e0\u79cd\u4f18\u5316\u6280\u5de7\uff1a<\/p>\n<\/p>\n<ul>\n<li>\u7f13\u5b58\u7ecf\u5e38\u4f7f\u7528\u7684\u8f6c\u6362\u7ed3\u679c\uff0c\u4ee5\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u3002<\/li>\n<li>\u5bf9\u5faa\u73af\u4e2d\u7684\u64cd\u4f5c\u8fdb\u884c\u4f18\u5316\uff0c\u4f8b\u5982\u907f\u514d\u5728\u6bcf\u4e2a\u5faa\u73af\u8fed\u4ee3\u4e2d\u521b\u5efa\u65b0\u5b57\u7b26\u4e32\u3002<\/li>\n<li>\u5e76\u884c\u5904\u7406\u8f6c\u6362\u4efb\u52a1\uff0c\u5982\u679c\u5728Node.js\u73af\u5883\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528worker\u7ebf\u7a0b\u6765\u8fdb\u884c\u5e76\u884c\u8f6c\u6362\u3002<\/li>\n<\/ul>\n<p><pre><code class=\"language-javascript\">\/\/ \u793a\u4f8b\uff1a\u4f7f\u7528Map\u5bf9\u8c61\u4f5c\u4e3a\u7f13\u5b58<\/p>\n<p>const hexCache = new Map();<\/p>\n<p>function efficientHexString(number) {<\/p>\n<p>    if (hexCache.has(number)) {<\/p>\n<p>        return hexCache.get(number);<\/p>\n<p>    }<\/p>\n<p>    let hexString = number.toString(16).toUpperCase();<\/p>\n<p>    hexCache.set(number, hexString);<\/p>\n<p>    return hexString;<\/p>\n<p>}<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3a<code>hexCache<\/code>\u7684Map\u5bf9\u8c61\u6765\u5b58\u50a8\u5df2\u8ba1\u7b97\u51fa\u768416\u8fdb\u5236\u5b57\u7b26\u4e32\u3002\u5728\u8f6c\u6362\u51fd\u6570<code>efficientHexString<\/code>\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u68c0\u67e5Map\u5bf9\u8c61\u662f\u5426\u5df2\u7ecf\u5305\u542b\u4e86\u7ed9\u5b9a\u6570\u5b57\u7684\u8f6c\u6362\u7ed3\u679c\u3002\u5982\u679c\u6709\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u7f13\u5b58\u4e2d\u7684\u503c\uff1b\u5982\u679c\u6ca1\u6709\uff0c\u5219\u8fdb\u884c\u8f6c\u6362\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u7f13\u5b58\u8fdbMap\u5bf9\u8c61\u4e2d\u3002\u8fd9\u6837\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u91cd\u590d\u8ba1\u7b97\u7684\u5f00\u9500\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u91cf\u91cd\u590d\u6570\u5b57\u8f6c\u6362\u65f6\u3002<\/p>\n<\/p>\n<p><p>\u4ee5\u4e0a\u5185\u5bb9\u8be6\u5c3d\u5730\u5c55\u793a\u4e86\u5728JavaScript\u4e2d\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a16\u8fdb\u5236\u7684\u591a\u79cd\u65b9\u6cd5\u4e0e\u5b9e\u9645\u5e94\u7528\u793a\u4f8b\uff0c\u5e76\u6d89\u53ca\u4e86\u76f8\u5173\u7684\u6027\u80fd\u8003\u91cf\u548c\u4f18\u5316\u7b56\u7565\u3002\u6b63\u5982\u53ef\u89c1\uff0c\u867d\u7136\u4f7f\u7528\u5185\u5efa\u65b9\u6cd5\u8fdb\u884c\u8f6c\u6362\u662f\u6700\u4e3a\u7b80\u5355\u76f4\u63a5\u7684\uff0c\u4f46\u6839\u636e\u9879\u76ee\u9700\u6c42\u9009\u62e9\u9002\u5f53\u7684\u8f6c\u6362\u65b9\u6cd5\u548c\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u4e5f\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>\u5982\u4f55\u5728javascript\u9879\u76ee\u4e2d\u5c06\u6570\u5b57\u8f6c\u4e3a\u5341\u516d\u8fdb\u5236\uff1f<\/strong><\/p>\n<ol>\n<li><strong>\u4f7f\u7528toString()\u65b9\u6cd5<\/strong>\uff1a\u4f60\u53ef\u4ee5\u4f7f\u7528JavaScript\u7684\u5185\u7f6etoString()\u65b9\u6cd5\u6765\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5341\u516d\u8fdb\u5236\u3002\u4f8b\u5982\uff0c\u8981\u5c06\u6570\u5b5710\u8f6c\u6362\u4e3a\u5341\u516d\u8fdb\u5236\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/li>\n<\/ol>\n<pre><code class=\"language-javascript\">let number = 10;\nlet hexadecimal = number.toString(16);\nconsole.log(hexadecimal); \/\/ \u8f93\u51fa &quot;a&quot;\n<\/code><\/pre>\n<ol start=\"2\">\n<li><strong>\u4f7f\u7528padStart()\u65b9\u6cd5\u8fdb\u884c\u8865\u96f6\u64cd\u4f5c<\/strong>\uff1a\u6709\u65f6\u5019\uff0c\u4f60\u53ef\u80fd\u5e0c\u671b\u5f97\u5230\u56fa\u5b9a\u4f4d\u6570\u7684\u5341\u516d\u8fdb\u5236\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528padStart()\u65b9\u6cd5\u5728\u8f6c\u6362\u540e\u7684\u5341\u516d\u8fdb\u5236\u6570\u524d\u8fdb\u884c\u8865\u96f6\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n<pre><code class=\"language-javascript\">let number = 15;\nlet hexadecimal = number.toString(16).padStart(2, &#039;0&#039;);\nconsole.log(hexadecimal); \/\/ \u8f93\u51fa &quot;0f&quot;\n<\/code><\/pre>\n<ol start=\"3\">\n<li><strong>\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26<\/strong>\uff1a\u53e6\u4e00\u79cd\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5341\u516d\u8fdb\u5236\u7684\u65b9\u6cd5\u662f\u4f7f\u7528JavaScript\u7684\u4f4d\u8fd0\u7b97\u7b26\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528toString()\u65b9\u6cd5\u7684\u4e00\u79cd\u53d8\u4f53\uff0c\u901a\u8fc7\u4e24\u6b21\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26\u76f4\u63a5\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5341\u516d\u8fdb\u5236\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/li>\n<\/ol>\n<pre><code class=\"language-javascript\">let number = 20;\nlet hexadecimal = (number &gt;&gt;&gt; 0).toString(16);\nconsole.log(hexadecimal); \/\/ \u8f93\u51fa &quot;14&quot;\n<\/code><\/pre>\n<p>\u603b\u7ed3\uff1a\u4f60\u53ef\u4ee5\u4f7f\u7528toString()\u65b9\u6cd5\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5341\u516d\u8fdb\u5236\uff0c\u5e76\u4f7f\u7528padStart()\u8fdb\u884c\u8865\u96f6\u64cd\u4f5c\uff0c\u6216\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26\u7684\u65b9\u6cd5\u6765\u5b8c\u6210\u8fd9\u4e2a\u8f6c\u6362\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript\u9879\u76ee\u4e2d\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a16\u8fdb\u5236\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5185\u7f6e\u7684toString()\u65b9\u6cd5\u3001String\u51fd\u6570\u4ee5\u53ca [&hellip;]","protected":false},"author":3,"featured_media":168868,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168848"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=168848"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168848\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/168868"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=168848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=168848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=168848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}