\u5b57\u7b26\u4e32\u5904\u7406\u65b9\u6cd5<\/strong><\/div>\n
1\u3001\u5b57\u7b26\u4e32\u5408\u5e76\u64cd\u4f5c\uff1a\u201c + \u201d<\/p>\n
var iNum01 = 12;\r\nvar iNum02 = 24;\r\nvar sNum03 = '12';\r\nvar sTr = 'abc';\r\nalert(iNum01+iNum02); \/\/\u5f39\u51fa36\r\nalert(iNum01+sNum03); \/\/\u5f39\u51fa1212 \u6570\u5b57\u548c\u5b57\u7b26\u4e32\u76f8\u52a0\u7b49\u540c\u4e8e\u5b57\u7b26\u4e32\u76f8\u52a0\r\nalert(sNum03+sTr); \/\/ \u5f39\u51fa12abc\r\n<\/pre>\n
2\u3001parseInt() \u5c06\u6570\u5b57\u5b57\u7b26\u4e32\u8f6c\u5316\u4e3a\u6574\u6570<\/p>\n
var sNum01 = '12';\r\nvar sNum02 = '24';\r\nvar sNum03 = '12.32';\r\nalert(sNum01+sNum02); \/\/\u5f39\u51fa1224\r\nalert(parseInt(sNum01)+parseInt(sNum02)) \/\/\u5f39\u51fa36\r\nalert(parseInt(sNum03)) \/\/\u5f39\u51fa\u6570\u5b5712 \u5c06\u5b57\u7b26\u4e32\u5c0f\u6570\u8f6c\u5316\u4e3a\u6570\u5b57\u6574\u6570\r\n<\/pre>\n
3\u3001parseFloat() \u5c06\u6570\u5b57\u5b57\u7b26\u4e32\u8f6c\u5316\u4e3a\u5c0f\u6570<\/p>\n
var sNum03 = '12.32'\r\nalert(parseFloat(sNum03)); \/\/\u5f39\u51fa 12.32 \u5c06\u5b57\u7b26\u4e32\u5c0f\u6570\u8f6c\u5316\u4e3a\u6570\u5b57\u5c0f\u6570\r\n<\/pre>\n
4\u3001split() \u628a\u4e00\u4e2a\u5b57\u7b26\u4e32\u5206\u9694\u6210\u5b57\u7b26\u4e32\u7ec4\u6210\u7684\u6570\u7ec4<\/p>\n
var sTr = '2017-4-22';\r\nvar aRr = sTr.split(\"-\");\r\nvar aRr2= sTr.split(\"\");\r\n\r\nalert(aRr); \/\/\u5f39\u51fa['2017','4','2']\r\nalert(aRr2); \/\/\u5f39\u51fa['2','0','1','7','-','4','-','2','2']\r\n<\/pre>\n
5\u3001indexOf() \u67e5\u627e\u5b57\u7b26\u4e32\u662f\u5426\u542b\u6709\u67d0\u5b57\u7b26<\/p>\n
var sTr = \"abcdefgh\";\r\nvar iNum = sTr.indexOf(\"c\");\r\nalert(iNum); \/\/\u5f39\u51fa2\r\n<\/pre>\n
6\u3001substring() \u622a\u53d6\u5b57\u7b26\u4e32 \u7528\u6cd5\uff1a substring(start,end)\uff08\u4e0d\u5305\u62ecend\uff09<\/p>\n
var sTr = \"abcdefghijkl\";\r\nvar sTr2 = sTr.substring(3,5);\r\nvar sTr3 = sTr.substring(1);\r\n\r\nalert(sTr2); \/\/\u5f39\u51fa de\r\nalert(sTr3); \/\/\u5f39\u51fa bcdefghijkl\r\n<\/pre>\n
\u5b57\u7b26\u4e32\u53cd\u8f6c<\/strong><\/span><\/div>\n
var str = 'asdfj12jlsdkf098';\r\nvar str2 = str.split('').reverse().join('');\r\n\r\nalert(str2);<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5bfc\u8bfb \u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u4ecb\u7ecd\u4e86JavaScript \u5b57\u7b26\u4e32\u5e38\u7528\u64cd\u4f5c\u7684\u77e5\u8bc6,\u5305\u62ec\u5b57\u7b26\u4e32\u622a\u53d6,\u67e5\u627e\u7c7b\u7684\u65b9\u6cd5,\u5bf9js\u5b57\u7b26\u4e32 […]<\/p>\n","protected":false},"author":643,"featured_media":156044,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-155980","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/155980","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/643"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=155980"}],"version-history":[{"count":6,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/155980\/revisions"}],"predecessor-version":[{"id":156233,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/155980\/revisions\/156233"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/156044"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=155980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=155980"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=155980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}