{"id":9955,"date":"2023-11-28T21:22:00","date_gmt":"2023-11-28T13:22:00","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9955"},"modified":"2023-11-30T19:40:08","modified_gmt":"2023-11-30T11:40:08","slug":"javascript-zhong-yin-shi-he-xian-shi-zhuan-huan-yo","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-yin-shi-he-xian-shi-zhuan-huan-yo\/","title":{"rendered":"JavaScript \u4e2d\u9690\u5f0f\u548c\u663e\u5f0f\u8f6c\u6362\u6709\u4ec0\u4e48\u533a\u522b\uff1f"},"content":{"rendered":"

\u5728JavaScript\u4e2d\uff0c\u9690\u5f0f\u8f6c\u6362\u548c\u663e\u5f0f\u8f6c\u6362\u662f\u6307\u5c06\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u7684\u4e24\u79cd\u4e0d\u540c\u65b9\u5f0f\u3002<\/p>\n

<\/span><\/a>\u9690\u5f0f\u8f6c\u6362\uff08Implicit Conversion\uff09<\/h3>\n

\u9690\u5f0f\u8f6c\u6362\u662f\u5728\u8fd0\u884c\u65f6\u81ea\u52a8\u53d1\u751f\u7684\u7c7b\u578b\u8f6c\u6362\uff0c\u4e0d\u9700\u8981\u660e\u786e\u7684\u4ee3\u7801\u6307\u793a\u3002\u8fd9\u79cd\u8f6c\u6362\u662f\u7531JavaScript\u5f15\u64ce\u6839\u636e\u4e0a\u4e0b\u6587\u81ea\u52a8\u6267\u884c\u7684\u3002<\/p>\n

\u4f8b\u5982\uff0c\u5728\u5b57\u7b26\u4e32\u548c\u6570\u5b57\u4e4b\u95f4\u8fdb\u884c\u52a0\u6cd5\u64cd\u4f5c\u65f6\uff1a<\/p>\n

let num = 10;\nlet str = "20";\n\nlet result = num + str; \/\/ \u9690\u5f0f\u8f6c\u6362\uff0c\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u7ed3\u679c\u4e3a "1020"\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cJavaScript\u5f15\u64ce\u5728\u6267\u884c\u52a0\u6cd5\u64cd\u4f5c\u65f6\u5c06\u6570\u5b57 num<\/code> \u9690\u5f0f\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u5c06\u4e24\u4e2a\u5b57\u7b26\u4e32\u8fde\u63a5\u8d77\u6765\u3002<\/p>\n
<\/span><\/a>\u663e\u5f0f\u8f6c\u6362\uff08Explicit Conversion\uff09<\/h3>\n
\u663e\u5f0f\u8f6c\u6362\u662f\u901a\u8fc7\u7f16\u5199\u4ee3\u7801\u660e\u786e\u8981\u6c42\u7c7b\u578b\u8f6c\u6362\u7684\u8fc7\u7a0b\u3002JavaScript\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5185\u7f6e\u7684\u51fd\u6570\u6216\u65b9\u6cd5\u6765\u6267\u884c\u663e\u5f0f\u8f6c\u6362\uff0c\u5982 Number()<\/code>\u3001String()<\/code>\u3001parseInt()<\/code>\u3001parseFloat()<\/code> \u7b49\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
let str = "50";\nlet num = Number(str); \/\/ \u663e\u5f0f\u8f6c\u6362\uff0c\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\n\nconsole.log(num); \/\/ \u8f93\u51fa 50\uff0c\u662f\u4e00\u4e2a\u6570\u5b57\u7c7b\u578b\n<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cNumber()<\/code> \u65b9\u6cd5\u7528\u4e8e\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u3002<\/p>\n
<\/span><\/a>\u533a\u522b<\/h3>\n
    \n
  • \n
    \u53d1\u751f\u65f6\u673a<\/strong>\uff1a\u9690\u5f0f\u8f6c\u6362\u5728\u8fd0\u884c\u65f6\u81ea\u52a8\u53d1\u751f\uff0c\u6839\u636e\u4e0a\u4e0b\u6587\u9690\u542b\u6267\u884c\uff1b\u800c\u663e\u5f0f\u8f6c\u6362\u9700\u8981\u901a\u8fc7\u4ee3\u7801\u660e\u786e\u8c03\u7528\u76f8\u5173\u7684\u8f6c\u6362\u51fd\u6570\u6216\u65b9\u6cd5\u3002<\/p>\n<\/li>\n
  • \n
    \u63a7\u5236\u6027<\/strong>\uff1a\u663e\u5f0f\u8f6c\u6362\u66f4\u52a0\u660e\u786e\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u7cbe\u786e\u5730\u63a7\u5236\u7c7b\u578b\u8f6c\u6362\u7684\u8fc7\u7a0b\uff1b\u800c\u9690\u5f0f\u8f6c\u6362\u53ef\u80fd\u5bfc\u81f4\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u964d\u4f4e\uff0c\u56e0\u4e3a\u7c7b\u578b\u8f6c\u6362\u53d1\u751f\u5728\u4e0d\u660e\u663e\u7684\u5730\u65b9\u3002<\/p>\n<\/li>\n
  • \n
    \u98ce\u9669<\/strong>\uff1a\u9690\u5f0f\u8f6c\u6362\u6709\u65f6\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7684\u7ed3\u679c\uff0c\u9700\u8981\u5f00\u53d1\u4eba\u5458\u8c28\u614e\u5904\u7406\uff1b\u800c\u663e\u5f0f\u8f6c\u6362\u7531\u4e8e\u662f\u660e\u786e\u6307\u5b9a\u7684\uff0c\u6240\u4ee5\u66f4\u5bb9\u6613\u9884\u6d4b\u548c\u63a7\u5236\u3002<\/p>\n<\/li>\n<\/ul>\n
    \u5728\u7f16\u5199JavaScript\u4ee3\u7801\u65f6\uff0c\u4e86\u89e3\u8fd9\u4e24\u79cd\u7c7b\u578b\u8f6c\u6362\u7684\u5dee\u5f02\u5f88\u91cd\u8981\uff0c\u4ee5\u907f\u514d\u6f5c\u5728\u7684\u9519\u8bef\u548c\u4e0d\u5fc5\u8981\u7684\u6df7\u6dc6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728JavaScript\u4e2d\uff0c\u9690\u5f0f\u8f6c\u6362\u548c\u663e\u5f0f\u8f6c\u6362\u662f\u6307\u5c06\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u7684\u4e24\u79cd\u4e0d\u540c\u65b9\u5f0f\u3002 \u9690\u5f0f\u8f6c\u6362\uff08 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-9955","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9955","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9955"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9955\/revisions"}],"predecessor-version":[{"id":13688,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9955\/revisions\/13688"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9955"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}