我正在将 json 对象中的数据加载到我页面上的表中。然后我允许用户通过输入过滤该数据并仅显示匹配项。我这样做的方法肯定不是很好,但它确实有效。
现在我想对机场列表及其代码做同样的事情。问题是机场列表要长得多,并且在加载带有数据的表格以及在表格中搜索用户输入时页面会严重停滞。
这是有效页面的信息,因此您可以了解我在做什么。
当我有一个更大的数据集要搜索时,我可以做些什么不同的事情来实现与我在这里相同的效果?
页面显示数据:(以“美国航空公司”或“aa”为例) https://pnrbuilder.com/_popups/dataDecoder.php
包含航空公司信息的 json 对象: https ://pnrbuilder.com/_java/airlineDecoder.js
将数据加载到页面并根据用户输入对其进行过滤的脚本: https ://pnrbuilder.com/_java/decodeData.js
这是我的代码中最重要的部分:
// This function is called by a for loop on dom ready
// It basically prints data stored in a json object to a table on the page
function fillInfo(line) {
var table = document.getElementById('decodeTable');
var row = document.createElement('tr');
table.appendChild(row);
var col1 = document.createElement('td');
row.appendChild(col1);
var curCode = document.createTextNode(arlnInfo.d[line].IATA);
col1.appendChild(curCode);
var col2 = document.createElement('td');
row.appendChild(col2);
var curArln = document.createTextNode(arlnInfo.d[line].Airline);
col2.appendChild(curArln);
var col3 = document.createElement('td');
row.appendChild(col3);
var curPre = document.createTextNode(arlnInfo.d[line].Prefix);
col3.appendChild(curPre);
var col4 = document.createElement('td');
row.appendChild(col4);
var curIcao = document.createTextNode(arlnInfo.d[line].ICAO);
col4.appendChild(curIcao);
var col5 = document.createElement('td');
row.appendChild(col5);
var curCnty = document.createTextNode(arlnInfo.d[line].Country);
col5.appendChild(curCnty);
}
// This function checks user input against data in the table
// If a match is found whitin a row, the row containing the match is shown
// If a match is not found that row is hidden
function filterTable(input) {
var decodeTable = document.getElementById('decodeTable');
var inputLength = input.length;
// THis first part makes sure that all rows of the generated table are hidden when no input is present
if (inputLength == 0) {
for (var r = 1; r < decodeTable.rows.length; r++) {
decodeTable.rows[r].style.display = "none";
}
}
// This part checks just the airline codes "column" of the table when input is only one or two characters
else if (inputLength < 3) {
for (var r = 1; r < decodeTable.rows.length; r++) {
var celVal = $(decodeTable.rows[r].cells[0])
.text()
.slice(0, inputLength)
.toLowerCase();
if (celVal == input) {
decodeTable.rows[r].style.display = "";
} else {
decodeTable.rows[r].style.display = "none";
}
}
}
// This part checks several "columns" of the table when input is more than two characters
else if (inputLength > 2) {
for (var r = 1; r < decodeTable.rows.length; r++) {
var celVal = $(decodeTable.rows[r].cells[2])
.text()
.slice(0, inputLength)
.toLowerCase();
var celVal2 = $(decodeTable.rows[r].cells[1])
.text();
if (celVal == input || celVal2 == input) {
decodeTable.rows[r].style.display = "";
} else if (celVal2.replace(/<[^>]+>/g, "")
.toLowerCase()
.indexOf(input) >= 0) {
decodeTable.rows[r].style.display = "";
} else {
decodeTable.rows[r].style.display = "none";
}
}
}
}