html5 datalist 选中option选项后的触发事件

2024-09-05 07:23:17

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使用input + datalist 实现自动补全功能，其中datalist中的内容是根据input输入的内容动态变换的，代码如下

<!DOCTYPE HTML><html><body><script src="./jquery-1.7.2.min.js" type="text/javascript" charset="utf-8"></script><script>function inputSelect(){ var input_select=$("#input").val(); var option_length=$("option").length; var option_id=''; for(var i=0;i<option_length;i++){  var option_value=$("option").eq(i).attr('data-value');  if(input_select==option_value){   option_id=$("option").eq(i).attr('data-id');   break;  } } console.log(input_select,option_length,option_id);};</script><input list="cars"  id="input" οnchange="inputSelect()"/><datalist id="cars"> <option value="111" data-value="111"  data-id="1"> <option value="122"  data-value="122" data-id="2"> <option value="1222" data-value="1222" data-id="4"></datalist></body></html>

html5中datalist, 对选择的option选项获取对应的属性值.

 <!DOCTYPE HTML><html><body><script src="jquery-1.12.4.min.js" type="text/javascript" charset="utf-8"></script><script type="text/javascript">function inputSelect(){    var input_select = $("#input").val();    var after_value = input_select.split(".");    var new_value = after_value[0] + "." + after_value[1] + "." + after_value[2] + ".xxx";    $("#input").val(new_value);    var option_length = $("#netsegments").find("option").length;    var data_id = '';    var firstIp = 1;    var lastIp = 255;    for(var i = 0; i < option_length; i++){        var option_value = $("option").eq(i).attr('data-value');        if(input_select == option_value){            data_id = $("option").eq(i).attr('data-id');            firstIp = $("option").eq(i).attr('firstIp');            lastIp = $("option").eq(i).attr('lastIp');            break;        }    }    console.log("input_select:" + input_select + ",option_length:" + option_length);    console.log("data_id:" + data_id + ",firstIp:" + firstIp + ",lastIp:" + lastIp);};</script><input list="netsegments" id="input" onchange="inputSelect()" placeholder="xxx.xxx.xxx.xxx" /><datalist id="netsegments">    <option label="10.0.23.xxx" value="10.0.23.1~62" data-value="10.0.23.1~62"  data-id="1" firstIp="1" lastIp="62" />    <option label="10.0.23.xxx" value="10.0.23.64~127"  data-value="10.0.23.64~127" data-id="2" firstIp="63" lastIp="127" />    <option label="10.0.23.xxx" value="10.0.23.129~192" data-value="10.0.23.129~192" data-id="3" firstIp="129" lastIp="192" /></datalist></body></html>

测试结果如下:
当选择第二个选项时候, console打印出结果:
input_select:10.0.23.64~127,option_length:3
data_id:2,firstIp:63,lastIp:127