{"id":185,"date":"2021-02-26T23:46:12","date_gmt":"2021-02-26T15:46:12","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javascript\/?p=185"},"modified":"2021-07-16T21:18:05","modified_gmt":"2021-07-16T13:18:05","slug":"js-%e7%9a%84-if-else-%e8%af%ad%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javascript\/post-185.html","title":{"rendered":"Js \u7684 if — else \u8bed\u53e5"},"content":{"rendered":"\n

Js \u4e2d\u7684 if — else \u8bed\u53e5\uff0c\u4e5f\u53eb\u505a\u6761\u4ef6\u5224\u65ad\u8bed\u53e5<\/p>\n\n\n\n

\u5355 if \u8bed\u53e5<\/h5>\n\n\n\n
var a = 10;\nif(a==10){  \/\/a==10\u662f\u6761\u4ef6\uff0c\u5982\u679c\u6761\u4ef6\u6ee1\u8db3\uff0c\u5219\u6267\u884c{}\u4e2d\u7684\u8bed\u53e5\n  document.write(\"\u6761\u4ef6\u6ee1\u8db3\"+\"<br\/>\");\n  document.write(\"heihei\"+\"<br\/>\");\n}  \n\/\/\u5f53{}\u4e2d\u7684\u8bed\u53e5\u53ea\u6709\u4e00\u6761\u65f6\uff0c\u53ef\u4ee5\u7701\u7565 {},\u6574\u4f53\u76f8\u5f53\u4e8e\u4e00\u6761\u8bed\u53e5\nif(a==10) document.write(\"\u6ca1\u5199{}\");<\/code><\/pre>\n\n\n\n
if \u914d\u5408 else<\/h5>\n\n\n\n
var a = 15;\nif(a==10){\n  document.write(\"a\u6052\u7b49\u4e8e10\");\n}else{  \/\/\u6761\u4ef6\u4e0d\u6ee1\u8db3\u65f6\uff0c\u6267\u884c else \u4e2d\u7684\u5185\u5bb9\n  document.write(\"a\u4e0d\u7b49\u4e8e10\");\n}\n\/\/\u7701\u7565{}\u65f6\uff0c\u53ef\u4ee5\u5199\u6210\u5982\u4e0b\u683c\u5f0f\uff0c\u5373 if \u548c else \u4e4b\u95f4\u5fc5\u987b \u5206\u53f7; \u9694\u5f00\nif(a==10)document.write(\"a\u6052\u7b49\u4e8e10\"); else document.write(\"a\u4e0d\u7b49\u4e8e10\");<\/code><\/pre>\n\n\n\n
\u5d4c\u5957\u7684 if — else<\/h5>\n\n\n\n
var a = 10;\nvar b = 5;\nif(a==10){\n  if(b==5){\n    document.write(\"a\u6052\u7b49\u4e8e10\u4e14b\u6052\u7b49\u4e8e5\");\n  }else{\n    document.write(\"a\u6052\u7b49\u4e8e10\u4f46b\u4e0d\u7b49\u4e8e5\");\n  }\n}else{\n    if(b==5){\n    document.write(\"a\u4e0d\u7b49\u4e8e10\uff0cb\u6052\u7b49\u4e8e5\");\n  }else{\n    document.write(\"a\u4e0d\u7b49\u4e8e10\uff0cb\u4e0d\u7b49\u4e8e5\");\n  }\n}\n\/\/\u7701\u7565{}\u65f6\uff0c\u53d8\u6210\u5982\u4e0b\u683c\u5f0f\uff0c\u53ef\u4ee5\u53d1\u73b0\n\/\/ if \u548c if \u4e4b\u95f4\u53ef\u4ee5\u4e0d\u9700\u8981 ;\n\/\/else\u914d\u5bf9\u4e0a\u4e00\u4e2aif\uff0c\u82e5\u524d\u9762\u8fd8\u6709else\uff0c\u5219\u914d\u5bf9\u5f80\u524d\u5012\u6570\u7b2c\u4e8c\u4e2a\uff0c\u4ee5\u6b64\u7c7b\u63a8\n\/\/else \u4e0e if \u4e4b\u95f4\u53ef\u4ee5\u4e0d\u5199\u4efb\u4f55\u5185\u5bb9\nif(a==10) if(b==5) document.write(\"a\u6052\u7b49\u4e8e10\u4e14b\u6052\u7b49\u4e8e5\"); else document.write(\"a\u6052\u7b49\u4e8e10\u4f46b\u4e0d\u7b49\u4e8e5\");else if(b==5) document.write(\"a\u4e0d\u7b49\u4e8e10\uff0cb\u6052\u7b49\u4e8e5\"); else document.write(\"a\u4e0d\u7b49\u4e8e10\uff0cb\u4e0d\u7b49\u4e8e5\");<\/code><\/pre>\n\n\n\n
if — else if \u8bed\u53e5<\/h5>\n\n\n\n
\u6b64\u8bed\u53e5\uff0c\u5b9e\u9645\u4e0a\u662f\u4e0a\u9762\u7684\u5d4c\u5957\u7701\u7565{}\u5f97\u6765<\/p>\n\n\n\n
var a = 10;\nif(a==1){\n  document.write(\"a\u6052\u7b49\u4e8e1\");\n}else if(a==2){\n  document.write(\"a\u6052\u7b49\u4e8e2\");\n}else{\n  document.write(\"a\u4e0d\u7b49\u4e8e1,\u4e5f\u4e0d\u7b49\u4e8e2\");\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Js \u4e2d\u7684 if — else \u8bed\u53e5\uff0c\u4e5f\u53eb\u505a\u6761\u4ef6\u5224\u65ad\u8bed\u53e5 \u5355 if \u8bed\u53e5 if \u914d\u5408 else \u5d4c… \u7ee7\u7eed\u9605\u8bfb Js \u7684 if — else \u8bed\u53e5<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/posts\/185"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/comments?post=185"}],"version-history":[{"count":2,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/posts\/185\/revisions"}],"predecessor-version":[{"id":187,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/posts\/185\/revisions\/187"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/media?parent=185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/categories?post=185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javascript\/wp-json\/wp\/v2\/tags?post=185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}