功能描述:
在搜索框中输入某一个字段,可以查询到相关的内容
功能实现:
1. 先声明变量用于保存输入框以及表格里面的内容
2. 循环遍历
遍历表格每一行,查找匹配项
3. 判断
如果输入框里面的内容跟表格中某个td的内容相似,则表格中的某行就显示,否则隐藏
代码实现:
<html><head><style>#myInput {width: 100%;font-size: 16px;padding: 12px 20px 12px 40px;border: 1px solid #ddd;margin-bottom: 12px;}#myTable {border-collapse: collapse;width: 100%;border: 1px solid #ddd;font-size: 18px;}#myTable th, #myTable td {text-align: left;padding: 12px;}#myTable tr {border-bottom: 1px solid #ddd;}#myTable tr.header, #myTable tr:hover {background-color: #f1f1f1;}</style></head><body><input type="text" id="myInput" onkeyup="myFunction()" placeholder="搜索..."><table id="myTable"><tr class="header"><th style="width:60%;">项目名称</th><th style="width:40%;">时间</th></tr><tr><td>redPackets</td><td>.2.6</td></tr><tr><td>traffic</td><td>.12.25</td></tr><tr><td>creditCard</td><td>.1.18</td></tr><tr><td>returnMoney</td><td>.11.25</td></tr></table><script>function myFunction() {// 声明变量var input, filter, table, tr, td, i;input = document.getElementById("myInput");filter = input.value.toUpperCase();table = document.getElementById("myTable");tr = table.getElementsByTagName("tr");// 循环表格每一行,查找匹配项for (i = 0; i < tr.length; i++) {td = tr[i].getElementsByTagName("td")[0];if (td) {if (td.innerHTML.toUpperCase().indexOf(filter) > -1) {tr[i].style.display = "";} else {tr[i].style.display = "none";}}}}</script></body></html>
扩展:模拟通讯录搜索提示
<html><head><style>#myInput {width: 100%;font-size: 16px; /* 加大字体 */padding: 12px 20px 12px 40px;border: 1px solid #ddd;margin-bottom: 12px;}#myUL {list-style-type: none;padding: 0;margin: 0;}#myUL li a {border: 1px solid #ddd; /* 链接添加边框 */margin-top: -1px;background-color: #f6f6f6;padding: 12px;text-decoration: none;font-size: 18px;color: black;display: block;}#myUL li a.header {background-color: #5587A2;cursor: default;}#myUL li a:hover:not(.header) {background-color: #eee;}</style></head><body><input type="text" id="myInput" onkeyup="myFunction()" placeholder="搜索..."><ul id="myUL"><li><a href="#" class="header">A</a></li><li><a href="#">Angel</a></li><li><a href="#">Adobe</a></li><li><a href="#">Anne</a></li><li><a href="#" class="header">B</a></li><li><a href="#">Betty</a></li><li><a href="#">Bella</a></li><li><a href="#">Brown</a></li><li><a href="#" class="header">C</a></li><li><a href="#">Calvin</a></li><li><a href="#">Chris</a></li><li><a href="#">Claire</a></li><li><a href="#" class="header">D</a></li><li><a href="#">David</a></li><li><a href="#">Daniel</a></li><li><a href="#">Dora</a></li><li><a href="#" class="header">E</a></li><li><a href="#">Emily</a></li><li><a href="#">Elena</a></li><li><a href="#">Eufemia</a></li></ul><script>function myFunction() {// 声明变量var input, filter, ul, li, a, i;input = document.getElementById('myInput');filter = input.value.toUpperCase();ul = document.getElementById("myUL");li = ul.getElementsByTagName('li');// 循环所有列表,查找匹配项for (i = 0; i < li.length; i++) {a = li[i].getElementsByTagName("a")[0];if (a.innerHTML.toUpperCase().indexOf(filter) > -1) {li[i].style.display = "";} else {li[i].style.display = "none";}}}</script></body></html>