如何使用 javascript/jquery 在每一行中添加编辑和删除按钮

Question

I want to add edit and delete button in each row and want to edit and delete row using javascript. How should I do this. Please check the below jsfiddle.

First Name:<br>
<input type="text" id="fName" /><br>
Last Name: <br> 
<input type="text" id="lName" /><br>
Gender: <br>
<input type="text" id="gender" /><br>
Age: <br>
<input type="text" id ="age" /> <br>
<input type="button" id ="display" value="Display" /><br>
<table id= "table" border="1">
<tr>
<th>Name</th>
<th>Gender</th>
<th>Age</th>
</tr>
</table>

javascript

(function setup() {
    "use strict";

var fNameElem = document.getElementById("fName");
var lNameElem = document.getElementById("lName");
var genderElem = document.getElementById("gender");
var ageElem = document.getElementById("age");
var tableElem = document.getElementById("table");
document.getElementById("display").addEventListener("click", function () {
    var newRow = tableElem.insertRow(-1);
    var newCell = newRow.insertCell(0);
    var newText = document.createTextNode(lNameElem.value + ", " + fNameElem.value);
    newCell.appendChild(newText);
    newCell = newRow.insertCell(1);
    newText  = document.createTextNode(genderElem.value);
    newCell.appendChild(newText);
    newCell = newRow.insertCell(2);
    newText  = document.createTextNode(ageElem.value);
    newCell.appendChild(newText);
    fNameElem.value = "";
    lNameElem.value = "";
    ageElem.value = "";
    tableElem.value = "";
});
})();

http://jsfiddle.net/xnWSV/

Answer 1

Ended up using jQuery, if you click edit the fields get repopulated and then you click 'Display' again to solve the problem. This is a very simple implementation of this, but I would recommended using Angular or some kind of templating libary if you were going to expand on this.

http://jsbin.com/jevejetofo/edit?html,js,console,output

JavaScript:

(function setup() {
    var selectedRow = null;
    var keys = ["fName","lName","gender","age"];

    function resetValues(fName,lName,gender,age){
        forEachInput(function(key){
            $("#"+key).val('');
        });
    }

    function forEachInput(callback){
        for(var i = 0; i < keys.length; i++) {
            callback(keys[i]);
        }
    }

    function createRow(){
        var row    = $(".tr_clone").clone()
        var newRow = row.appendTo("table").removeClass("tr_clone").fadeIn(1000);
        forEachInput(function(key){
            newRow.find("."+key).text($("#"+key).val());
        });
        resetValues();
        selectedRow = null;
    }

    function applyValues(row){
        forEachInput(function(key){
            row.find("."+key).text($("#"+key).val());
        });
    }


    function editRow(row){
        forEachInput(function(key){
            $("#"+key).val(row.find("."+key).text());
        });
        selectedRow = row;
    }

    $("#display").on("click", function () {
        if(selectedRow === null){
            createRow();
            resetValues();
        } else {
            applyValues(selectedRow);
            resetValues();
            selectedRow = null;
        }
    });

    $("table").delegate("button").on("click",function(e){
        e.preventDefault(); 
        if($(e.target).hasClass('edit')){
            editRow($(e.target).parent("td").parent("tr"));
        } else {
           $(e.target).parent("td").parent("tr").fadeOut(1000).remove();            
        }
    });

})();

HTML

<script src="https://code.jquery.com/jquery-2.0.3.js"></script>First Name:<br>
<input type="text" id="fName" /><br>
Last Name: <br> 
<input type="text" id="lName" /><br>
Gender: <br>
<input type="text" id="gender" /><br>
Age: <br>
<input type="text" id ="age" /> <br>
<input type="button" id="display" value="Display" /><br>
<table id= "table" border="1">
<tr>
<th>First Name</th>
  <th>Last Name</th>
<th>Gender</th>
<th>Age</th>
</tr>

      <tr class="tr_clone" style="display:none;">
        <td class="fName"></td>
        <td class="lName"><input type="text" autofocus placeholder="location" name="location" ></td>
        <td class="gender"><input type="text" placeholder="Start Date" name="datepicker_start" class="datepicker"></td>
        <td class="age"><input type="text" placeholder="End Date" name="datepicker_end" class="datepicker"></td>
        <td class="buttons"><button class="delete">Delete</button> | <button class="edit">Edit</button></td>
    </tr>
</table>