{"id":320,"date":"2009-04-16T21:17:00","date_gmt":"2009-04-16T01:17:00","guid":{"rendered":""},"modified":"2013-11-29T11:57:44","modified_gmt":"2013-11-29T03:57:44","slug":"javascript%e5%af%b9select%e7%9a%84%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/kyle.ai\/blog\/320.html","title":{"rendered":"JavaScript\u5bf9Select\u7684\u64cd\u4f5c"},"content":{"rendered":"<pre class=\"brush: jscript; title: ; notranslate\" title=\"\">\r\n\/\/1.\u5224\u65ad\u662f\u5426\u5b58\u5728\u6307\u5b9avalue\u7684Item\r\nfunction ExistValue(obj,value){\r\n    for(var i=0;i&lt;obj.options.length;i++){\r\n        if(obj.options&#x5B;i].value == value){\r\n            return true;\r\n        }\r\n    }\r\n    return false;\r\n}\r\n\/\/2.\u52a0\u5165\u4e00\u4e2aItem\r\nfunction AddItem(obj,text,value){\r\nvar varItem = new Option(text,value);\r\nobj.options.add(varItem);\r\n}\r\n\/\/3.\u5220\u9664\u503c\u4e3avalue\u7684\u6240\u6709Item\r\nfunction RemoveItems(obj,value){\r\nfor(var i=0;i&lt;obj.options.length;i++){\r\n   if(obj.options&#x5B;i].value == ItemValue){\r\n    obj.options.remove(i);\r\n   }\r\n}\r\n}\r\n\/\/4.\u5220\u9664\u67d0\u4e00\u4e2aindex\u7684\u9009\u9879\r\nfunction RemoveItem(obj,index){\r\nobj.options.remove(index);\r\n}\r\n\/\/5.\u66f4\u65b0\u7b2cindex\u9879\u7684value\u548ctext\r\nfunction UpdateItem(obj,index,value,text){\r\nobj.options&#x5B;index].value = value;\r\nobj.options&#x5B;index].text = text;\r\n}\r\n\r\n\/\/6.\u8bbe\u7f6eselect\u4e2d\u6307\u5b9atext\u7684\u7b2c\u4e00\u4e2aItem\u4e3a\u9009\u4e2d\r\nfunction SelectItemByText(obj,text){\r\n    var isExit = false;\r\n    for(var i=0;i&lt;obj.options.length;i++){\r\n        if(objSelect.options&#x5B;i].text == text){\r\n            obj.options&#x5B;i].selected = true;\r\n            return true;\r\n        }\r\n    }\r\nreturn false;\r\n}\r\n\r\n\/\/7.\u8bbe\u7f6eselect\u4e2d\u6307\u5b9avalue\u7684\u7b2c\u4e00\u4e2aItem\u4e3a\u9009\u4e2d\r\nfunction SelectItemByValue(obj,value){\r\n    var isExit = false;\r\n    for(var i=0;i&lt;obj.options.length;i++){\r\n        if(objSelect.options&#x5B;i].value == value){\r\n            obj.options&#x5B;i].selected = true;\r\n            return true;\r\n        }\r\n    }\r\nreturn false;\r\n}\r\n\r\n\/\/8.\u5f97\u5230\u5f53\u524d\u9009\u4e2d\u9879\u7684value\uff0cindex,text\r\nfunction GetValue(obj){\r\nreturn obj.value;\r\n}\r\n\/\/9.\u5f97\u5230\u5f53\u524d\u9009\u4e2d\u9879\u7684index\r\nfunction GetIndex(obj){\r\nreturn obj.selectedIndex;\r\n}\r\n\/\/10.\u5f97\u5230\u5f53\u524d\u9009\u4e2d\u9879\u7684text\r\nfunction GetText(obj){\r\nreturn obj.options&#x5B;obj.selectedIndex].text;\r\n}\r\n\/\/11.\u6e05\u7a7a\u6240\u6709\u9009\u9879\r\nfunction Clear(obj){\r\nobj.options.length = 0;\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\/\/1.\u5224\u65ad\u662f\u5426\u5b58\u5728\u6307\u5b9avalue\u7684Item function ExistValue(obj,value){  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-320","post","type-post","status-publish","format-standard","hentry","category-code_related"],"_links":{"self":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/comments?post=320"}],"version-history":[{"count":1,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/320\/revisions"}],"predecessor-version":[{"id":5306,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/320\/revisions\/5306"}],"wp:attachment":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/media?parent=320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/categories?post=320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/tags?post=320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}