retrieveHTML,translateonly,xmlParse,clearRows,addRow,findlocid,setPara,

最新推荐文章于 2025-12-03 13:04:04 发布

原创最新推荐文章于 2025-12-03 13:04:04 发布 · 809 阅读

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#function #search #button #javascript #null #date

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本文介绍了一个基于JavaScript的天气应用程序的功能实现，包括城市搜索、参数设置及国际化语言支持等功能。文章详细解释了如何通过HTTP请求获取城市信息，并利用XML解析来展示搜索结果，同时还涉及了如何设置用户偏好的温度单位、风速单位等。

// JavaScript Document
var cities;
var tempunit;
var visbunit;
var presunit;
var windunit;
var locimg;
var ssn = "xml.weather.com";
var xmlDoc = null;

function setCookie(name,value) {
   var today = new Date();
   var expires = new Date();
   expires.setTime(today.getTime() + 1000*60*60*24*365);
   document.cookie = name + "=" + escape(value) + "; expires=" + expires.toGMTString();
}

var curlocid = getCookie("WT_loc_id")
var curcityname = getCookie("WT_loc_text")
var tempunit = getCookie("WT_T_unit");
var windunit = getCookie("WT_Wind_unit");
var presunit = getCookie("WT_P_unit");
var visbunit = getCookie("WT_Visb_unit");
var lan = getCookie("WT_Lan");

xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async = "false";

switch(lan) {
case "1":
  xmlDoc.load("language/lan_cn_S.xml");
break;
case "0":
  xmlDoc.load("language/lan_en.xml");
break;
case "2":
  xmlDoc.load("language/lan_cn_T.xml");
break;
}

function retrieveHTML(sURL) {
var htmlContent;
var objXMLHTTP = new ActiveXObject("Microsoft.XMLHTTP");
objXMLHTTP.open("GET", sURL, false);
objXMLHTTP.send();
htmlContent = objXMLHTTP.responseBody;
var objRS = new ActiveXObject("ADODB.Recordset");
objRS.Fields.Append("txt", 200, 40000, 128);
objRS.Open();
objRS.AddNew();
objRS.Fields.item("txt").AppendChunk(htmlContent);
var htmlContent = objRS.Fields.item("txt").value;
objRS.Close();
objRS = null;
objXMLHTTP = null;
return htmlContent;
}

function translateonly(WTwords) {
objwords = xmlDoc.getElementsByTagName(WTwords);
if(objwords.length > 0) {
rewords = objwords.item(0).text;
} else {
rewords = WTwords;
}
return rewords;
}

function xmlParse(xmlText) {
var nodes = new Array()
var xmlDoc = new ActiveXObject("Microsoft.XMLDOM")
xmlDoc.async = "false"
xmlDoc.loadXML(xmlText)
for(i=0; i<xmlDoc.documentElement.childNodes.length; i++){
  nodes[i] = new Array()
  nodes[i][0] = xmlDoc.documentElement.childNodes.item(i).text
  nodes[i][1] = xmlDoc.documentElement.childNodes.item(i).getAttribute("id")
  nodes[i][2] = xmlDoc.documentElement.childNodes.item(i).getAttribute("type")
}
return nodes
}

function clearRows(oTable) {
var rowsnum = oTable.rows.length
for(i=0; i<rowsnum; i++) {
oTable.deleteRow()
}
}

function addRow(oTable,rowHTML) {
var oRow=oTable.insertRow()
var aRows=oTable.rows
var aCells=oRow.cells
var oCell=aRows(oRow.rowIndex).insertCell(aCells.length)
oCell.innerHTML=rowHTML
}

}

function setPara() {
tempunit = 0;
visbunit = 0;
presunit = 0;
windunit = 0;
locimg = 0;
if(configtemp[0].checked) tempunit = 1;
if(configvisb[0].checked) visbunit = 1;
if(configpres[0].checked) presunit = 1;
if(configwind[0].checked) windunit = 1;
if(configlocimg[0].checked) locimg = 1;
setCookie("WT_T_unit", tempunit);
setCookie("WT_Wind_unit", windunit);
setCookie("WT_P_unit", presunit);
setCookie("WT_Visb_unit", visbunit);
setCookie("WT_Lan", configlan.selectedIndex);
setCookie("WT_loc_img", locimg);
location.replace("weather.htm");
}

function confirmcity() {
if(cities.length == 1) {
  setCookie("WT_loc_id", cities[0][1])
  setCookie("WT_loc_type", cities[0][2])
  setCookie("WT_loc_text", cities[0][0])
} else {
  for(i=0; i<cities.length; i++) {
   if(listcities[i].checked) {
    setCookie("WT_loc_id", cities[i][1])
    setCookie("WT_loc_type", cities[i][2])
    setCookie("WT_loc_text", cities[i][0])
   }
  }
}
location.replace("config.htm")
}