html5 datalist 选中option选项后的触发事件

参考博客:  https://blog.csdn.net/qishuixian/article/details/78427951

最近一段时间用到了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>






<!-- 选择option的value, 显示在input里, 然后获取对应的属性data-id, firstIp, lastIp -->
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







 


 







        

        

            posted on 
2019-05-27 17:36 
努力做一个伪程序员 
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