{"id":168055,"date":"2024-05-08T16:15:43","date_gmt":"2024-05-08T08:15:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168055.html"},"modified":"2024-05-08T16:15:47","modified_gmt":"2024-05-08T08:15:47","slug":"javascript-%e4%b8%ad%e5%a6%82%e4%bd%95%e5%b0%86-2-%e8%bf%9b%e5%88%b6%e8%bd%ac%e4%b8%ba-10-%e8%bf%9b%e5%88%b6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168055.html","title":{"rendered":"javascript \u4e2d\u5982\u4f55\u5c06 2 \u8fdb\u5236\u8f6c\u4e3a 10 \u8fdb\u5236"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27034141\/f0436ac2-c277-47f0-b048-83975eafe25d.webp\" alt=\"javascript \u4e2d\u5982\u4f55\u5c06 2 \u8fdb\u5236\u8f6c\u4e3a 10 \u8fdb\u5236\" \/><\/p>\n<p><p>\u5728JavaScript\u4e2d\uff0c\u5c062\u8fdb\u5236\u8f6c\u4e3a10\u8fdb\u5236\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<strong>parseInt\u51fd\u6570<\/strong>\u548c<strong>\u624b\u52a8\u5b9e\u73b0\u8f6c\u6362<\/strong>\u3002\u5176\u4e2d\uff0c<strong>parseInt\u51fd\u6570<\/strong>\u662f\u4e00\u79cd\u7b80\u5355\u9ad8\u6548\u7684\u65b9\u5f0f\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\u5b57\u3002\u6b64\u65b9\u6cd5\u7684\u4f18\u52bf\u5728\u4e8e\u5176\u7b80\u5355\u6027\u548c\u5728JavaScript\u4e2d\u7684\u5e7f\u6cdb\u652f\u6301\u3002\u8981\u4f7f\u7528parseInt\u51fd\u6570\u8fdb\u884c\u8f6c\u6362\uff0c\u53ea\u9700\u5c06\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f20\u5165\uff0c\u5e76\u5c06\u57fa\u6570\uff08\u6b64\u5904\u4e3a2\uff09\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002JavaScript\u4f1a\u81ea\u52a8\u5904\u7406\u8f6c\u6362\uff0c\u65e0\u9700\u624b\u52a8\u7f16\u5199\u590d\u6742\u7684\u8f6c\u6362\u903b\u8f91\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528PARSINT\u51fd\u6570<\/h3>\n<\/p>\n<p><p><strong>parseInt<\/strong> \u51fd\u6570\u662fJavaScript\u4e2d\u7528\u4e8e\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u7684\u5185\u7f6e\u51fd\u6570\uff0c\u975e\u5e38\u9002\u7528\u4e8e\u4e8c\u8fdb\u5236\u5230\u5341\u8fdb\u5236\u7684\u8f6c\u6362\u3002\u8981\u4f7f\u7528\u5b83\uff0c\u7b80\u5355\u4f20\u5165\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u5e76\u6307\u5b9a\u8f6c\u6362\u7684\u57fa\u6570\uff08\u4e8c\u8fdb\u5236\u4e3a2\uff09\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002\u4f8b\u5982\uff0c<code>parseInt(&quot;110&quot;, 2)<\/code>\u5c06\u8fd4\u56de\u5341\u8fdb\u5236\u4e2d\u76846\u3002<\/p>\n<\/p>\n<p><p>\u8f6c\u6362\u8fc7\u7a0b\u975e\u5e38\u76f4\u89c2\u3002\u5f53parseInt\u51fd\u6570\u63a5\u6536\u5230\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u65f6\uff0c\u5b83\u6309\u7167\u6307\u5b9a\u7684\u57fa\u6570\uff08\u6b64\u5904\u4e3a2\uff09\uff0c\u4ece\u5de6\u5230\u53f3\u89e3\u6790\u6bcf\u4e2a\u6570\u5b57\uff0c\u5e76\u6839\u636e\u4e8c\u8fdb\u5236\u4f4d\u7684\u4f4d\u7f6e\u8ba1\u7b97\u5176\u5341\u8fdb\u5236\u503c\u3002\u4f8b\u5982\uff0c\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32&quot;110&quot;\u4e2d\u7684\u6700\u5de6\u8fb9\u7684&quot;1&quot;\u4ee3\u8868(2^2)\uff08\u53734\uff09\uff0c\u4e2d\u95f4\u7684&quot;1&quot;\u4ee3\u8868(2^1)\uff08\u53732\uff09\uff0c\u6700\u53f3\u8fb9\u7684&quot;0&quot;\u4ee3\u8868(2^0)\uff08\u53730\uff09\u3002\u5c06\u8fd9\u4e9b\u503c\u76f8\u52a0\u5373\u5f97\u52306\uff0c\u8fd9\u5c31\u662f\u8be5\u5b57\u7b26\u4e32\u5728\u5341\u8fdb\u5236\u4e2d\u7684\u8868\u793a\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u624b\u52a8\u5b9e\u73b0\u8f6c\u6362<\/h3>\n<\/p>\n<p><p>\u867d\u7136\u4f7f\u7528parseInt\u662f\u4e00\u4e2a\u7b80\u4fbf\u7684\u65b9\u6cd5\uff0c\u4f46\u4e86\u89e3\u5982\u4f55\u624b\u52a8\u5b9e\u73b0\u8fd9\u4e00\u8f6c\u6362\u8fc7\u7a0b\u53ef\u4ee5\u5e2e\u52a9\u6df1\u523b\u7406\u89e3\u4e8c\u8fdb\u5236\u548c\u5341\u8fdb\u5236\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u624b\u52a8\u5b9e\u73b0\u4e3b\u8981\u6d89\u53ca\u6309\u6743\u5c55\u5f00\u6cd5\uff0c\u5373\u5c06\u6bcf\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u4e58\u4ee5\u5176\u5bf9\u5e94\u7684\u4e8c\u8fdb\u5236\u4f4d\u6743\u91cd\uff08\u5373(2^n)\uff09\uff0c\u7136\u540e\u5c06\u8fd9\u4e9b\u503c\u76f8\u52a0\u3002<\/p>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u786e\u5b9a\u4e8c\u8fdb\u5236\u6570\u6bcf\u4e00\u4f4d\u7684\u6743\u91cd\u3002\u4ece\u53f3\u5411\u5de6\uff0c\u6700\u53f3\u8fb9\u7684\u4f4d\u662f(2^0)\uff0c\u7136\u540e\u662f(2^1)\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u4e8c\u8fdb\u5236\u65701011\uff0c\u4ece\u53f3\u81f3\u5de6\u7684\u6743\u91cd\u4f9d\u6b21\u662f1\u30012\u30014\u30018\u3002\u7136\u540e\uff0c\u5c06\u6bcf\u4e00\u4f4d\u7684\u6570\u5b57\u4e58\u4ee5\u5176\u5bf9\u5e94\u7684\u6743\u91cd\uff0c\u5e76\u5c06\u7ed3\u679c\u76f8\u52a0\u3002\u5728\u6b64\u4f8b\u4e2d\uff0c\u8ba1\u7b97\u5982\u4e0b\uff1a(1<em>8+0<\/em>4+1<em>2+1<\/em>1=11)\u3002\u8fd9\u6837\uff0c\u4e8c\u8fdb\u5236\u7684&quot;1011&quot;\u5c31\u6210\u529f\u8f6c\u6362\u4e3a\u4e86\u5341\u8fdb\u5236\u768411\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u9009\u62e9\u65b9\u6cd5<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u9645\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u5e94\u7528\u573a\u666f\uff0c<strong>\u4f7f\u7528parseInt\u51fd\u6570<\/strong>\u56e0\u5176\u7b80\u6d01\u6027\u548c\u6548\u7387\u800c\u88ab\u63a8\u8350\u3002\u8fd9\u79cd\u65b9\u6cd5\u5bf9\u521d\u5b66\u8005\u53cb\u597d\uff0c\u4e5f\u6613\u4e8e\u7ef4\u62a4\u3002\u7136\u800c\uff0c\u4e86\u89e3\u624b\u52a8\u8f6c\u6362\u7684\u8fc7\u7a0b\u5bf9\u4e8e\u7406\u89e3\u4e8c\u8fdb\u5236\u548c\u5341\u8fdb\u5236\u4e4b\u95f4\u7684\u57fa\u672c\u8f6c\u6362\u673a\u5236\u662f\u975e\u5e38\u6709\u5e2e\u52a9\u7684\uff0c\u7279\u522b\u662f\u6d89\u53ca\u5e95\u5c42\u7f16\u7a0b\u6216\u9700\u8981\u81ea\u5b9a\u4e49\u8f6c\u6362\u903b\u8f91\u65f6\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u6ce8\u610f\u4e8b\u9879\u548c\u4f18\u5316<\/h3>\n<\/p>\n<p><p>\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u90fd\u6709\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u9700\u8981\u8003\u8651\u3002\u9996\u5148\uff0c\u786e\u4fdd\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u7684\u683c\u5f0f\u6b63\u786e\uff0c\u53ea\u5305\u542b1\u548c0\u3002\u5176\u6b21\uff0c\u8003\u8651\u5230JavaScript\u7684\u6570\u5b57\u7cbe\u5ea6\u9650\u5236\uff08\u7279\u522b\u662f\u5bf9\u4e8e\u975e\u5e38\u5927\u7684\u6570\u5b57\uff09\uff0c\u5f53\u5904\u7406\u5927\u578b\u4e8c\u8fdb\u5236\u6570\u65f6\u8981\u683c\u5916\u5c0f\u5fc3\u3002<\/p>\n<\/p>\n<p><p>\u4e3a\u4e86\u4f18\u5316\u8f6c\u6362\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u7f13\u5b58\u673a\u5236\uff0c\u7279\u522b\u662f\u5728\u53cd\u590d\u8f6c\u6362\u76f8\u540c\u7684\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u65f6\u3002\u6b64\u5916\uff0c\u5728\u4f7f\u7528parseInt\u65f6\uff0c\u786e\u4fdd\u63d0\u4f9b\u7684\u5b57\u7b26\u4e32\u786e\u5b9e\u662f\u4e8c\u8fdb\u5236\u683c\u5f0f\uff0c\u56e0\u4e3aparseInt\u4e5f\u652f\u6301\u5176\u4ed6\u57fa\u6570\u7684\u8f6c\u6362\uff0c\u9519\u8bef\u7684\u57fa\u6570\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n<p><p>\u603b\u4e4b\uff0cJavaScript\u4e2d\u5c062\u8fdb\u5236\u8f6c\u4e3a10\u8fdb\u5236\u65e2\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684parseInt\u51fd\u6570\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u624b\u52a8\u8ba1\u7b97\u5b8c\u6210\u3002\u4e8c\u8005\u5404\u6709\u4f18\u52bf\uff0c\u4f46\u5728\u5b9e\u8df5\u4e2d\uff0c\u66f4\u503e\u5411\u4e8e\u4f7f\u7528parseInt\u51fd\u6570\uff0c\u56e0\u4e3a\u5b83\u7b80\u5355\u3001\u9ad8\u6548\u5e76\u4e14\u6613\u4e8e\u4f7f\u7528\u3002\u7136\u800c\uff0c\u4e86\u89e3\u624b\u52a8\u8f6c\u6362\u8fc7\u7a0b\u7684\u539f\u7406\u5bf9\u4e8e\u6df1\u5165\u7406\u89e3\u6570\u636e\u8868\u793a\u548c\u7f16\u7a0b\u903b\u8f91\u4e5f\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>1. \u5982\u4f55\u5728 JavaScript \u4e2d\u5c06\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\uff1f<\/strong><br \/>\n\u8981\u5c06\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 JavaScript \u4e2d\u7684 <code>parseInt<\/code> \u65b9\u6cd5\u3002\u4f8b\u5982\uff0c\u5c06\u5b57\u7b26\u4e32\u5f62\u5f0f\u7684\u4e8c\u8fdb\u5236\u6570 <code>101010<\/code> \u8f6c\u6362\u4e3a\u5bf9\u5e94\u7684\u5341\u8fdb\u5236\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-javascript\">let binaryNumber = &quot;101010&quot;;\nlet decimalNumber = parseInt(binaryNumber, 2);\n\nconsole.log(decimalNumber); \/\/ \u8f93\u51fa\uff1a42\n<\/code><\/pre>\n<p><strong>2. \u5728 JavaScript \u4e2d\u5c06\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u4e8c\u8fdb\u5236\u6570\u7684\u6570\u7ec4\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\u6570\u7ec4\u5e94\u8be5\u5982\u4f55\u64cd\u4f5c\uff1f<\/strong><br \/>\n\u5982\u679c\u6709\u4e00\u4e2a\u5305\u542b\u591a\u4e2a\u4e8c\u8fdb\u5236\u6570\u7684\u6570\u7ec4\uff0c\u60f3\u8981\u5c06\u6bcf\u4e2a\u4e8c\u8fdb\u5236\u6570\u90fd\u8f6c\u6362\u4e3a\u5bf9\u5e94\u7684\u5341\u8fdb\u5236\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>map<\/code> \u65b9\u6cd5\u7ed3\u5408 <code>parseInt<\/code> \u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"language-javascript\">let binaryNumbers = [&quot;1010&quot;, &quot;1100&quot;, &quot;1111&quot;];\nlet decimalNumbers = binaryNumbers.map(binaryNumber =&gt; parseInt(binaryNumber, 2));\n\nconsole.log(decimalNumbers); \/\/ \u8f93\u51fa\uff1a[10, 12, 15]\n<\/code><\/pre>\n<p><strong>3. \u5728 JavaScript \u4e2d\u5982\u4f55\u5c06\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u5e76\u4fdd\u7559\u6307\u5b9a\u5c0f\u6570\u4f4d\u6570\uff1f<\/strong><br \/>\n\u5982\u679c\u60f3\u8981\u5c06\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u5e76\u4fdd\u7559\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>parseInt<\/code> \u65b9\u6cd5\u5c06\u4e8c\u8fdb\u5236\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\uff0c\u7136\u540e\u4f7f\u7528 <code>toFixed<\/code> \u65b9\u6cd5\u8bbe\u7f6e\u5c0f\u6570\u4f4d\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-javascript\">let binaryNumber = &quot;110.101&quot;;\nlet decimalNumber = parseInt(binaryNumber, 2);\nlet decimalNumberWithFixedPrecision = decimalNumber.toFixed(2);\n\nconsole.log(decimalNumberWithFixedPrecision); \/\/ \u8f93\u51fa\uff1a6.63\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\uff0c\u5c062\u8fdb\u5236\u8f6c\u4e3a10\u8fdb\u5236\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5\uff1aparseInt\u51fd\u6570\u548c\u624b\u52a8\u5b9e\u73b0\u8f6c\u6362\u3002\u5176\u4e2d\uff0cpar [&hellip;]","protected":false},"author":3,"featured_media":168062,"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\/168055"}],"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=168055"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168055\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/168062"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=168055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=168055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=168055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}