在javascript / jquery中为输入元素的ID分配变量值

Question

I'm trying to assign variable value to dynamically created input elements. But I couldn't. The input elemts are created but not with id.

        $(document).ready(function(){

// Declaring global variables   

    var cnt = 1;
    var fooId = "foo";
    var cnt1 ='aaaa';


// Code for Changing the datalist for second input testingphase when ever first input Tasks has been changed.


        $("#tasks" + cnt).change(function () {
        $("#activitytype" + cnt).replaceWith('<input id="activitytype" + ctn value="asasa" name="ActivityType" placeholder="ActivityType" >');

        if (bla1 == 'Service Request') {
            $("#testingphase" + cnt).replaceWith('<input id="testingphase" + ctn list="Service Request" name="Tasks" placeholder="Tasks2">');
        //  changingactivity ();


             }

Answer 1

You have to change your replaceWith method slightly to include the variable without quotes. Change:

 $("#activitytype" + cnt).replaceWith('<input id="activitytype" + ctn value="asasa" name="ActivityType" placeholder="ActivityType" >');

To something like:

 $("#activitytype" + cnt).replaceWith('<input id="activitytype' + ctn + '" value="asasa" name="ActivityType" placeholder="ActivityType" >');