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javascript - Urgent! Waiting online! Problem with linkage display of checkbox list?
代言
代言 2017-06-26 10:50:20
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现在需要使用checkbox进行两个复选框列表的联动显示，假如有两个复选框列表要显示两个结果集。

A复选框列表显示数组a:

[

{id:'1',name:'A'},
{id:'2',name:'B'},
{id:'3',name:'C'}

];

B复选框列表显示数组b:

[

{parentId:'1',childName:'a'},
{parentId:'1',childName:'b'},
{parentId:'2',childName:'c'},
{parentId:'2',childName:'d'},
{parentId:'3',childName:'e'}

];
Note: The parentId in array b corresponds to the id in array a

Now I want to click on an item in the A checkbox list, the B checkbox list will display the record corresponding to the parentId according to the id value checked in the A checkbox list, and all records will be checked by default. .

Is there any good method? I am a novice. It is best to have codes for reference. Thank you everyone!

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洪涛
洪涛2017-06-26 10:52:20 3 floor 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<p id="p1">
    <input type="checkbox" value="1"> A
    <input type="checkbox" value="2"> B
    <input type="checkbox" value="3"> C
</p>

<p id="p2">
    <input type="checkbox" value="a" data-parent="1"> a
    <input type="checkbox" value="b" data-parent="1"> b
    <input type="checkbox" value="c" data-parent="2"> c
    <input type="checkbox" value="d" data-parent="2"> d
    <input type="checkbox" value="e" data-parent="3"> e
</p>
<script>

    var checks1 = document.getElementById("p1").getElementsByTagName("input");
    var checks2 = document.getElementById("p2").getElementsByTagName("input");

    for (var i=0;i<checks1.length;i++){
        checks1[i].onclick = function () {
            var cValue = this.value;
            var isCheck = this.checked;
            for (var j=0;j<checks2.length;j++){
                if (checks2[j].dataset.parent==cValue){
                    checks2[j].checked =isCheck;
                }
            }
        }
    }
</script>

</body>
</html>
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某草草
某草草2017-06-26 10:52:20 2 floor

Only provide ideas

Listen to the change event of A. When A changes, get its value and then display the corresponding B.

By default, all checkbox elements of B are not displayed, display:none, and a data attribute is tied to each checkbox of B to distinguish the corresponding value of A. Then just change the display attribute of the checkbox corresponding to B when A changes.

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黄舟
黄舟2017-06-26 10:52:20 1 floor

Thank you both for your answers. I will post the code for reference and communication if necessary

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="./jquery-3.1.1.min.js"></script>
    <style type="text/css">
        .show{
            display: block;
        }
        .hidden{
            display: none;
        }
    </style>
</head>
<body>
    <p id="p1">
        <input type="checkbox" value="1">A</input>
        <input type="checkbox" value="2">B</input>
        <input type="checkbox" value="3">C</input>
    </p>

    <p id="p2">
        <p class='hidden'>
            <input type="checkbox" value="1" data-parent-id="1" >a</input>
        </p>
        <p class='hidden'>
            <input type="checkbox" value="2" data-parent-id="1" >b</input>
        </p>
        <p class='hidden'>
            <input type="checkbox" value="3" data-parent-id="2" >c</input>
        </p>
        <p class='hidden'>
            <input type="checkbox" value="4" data-parent-id="2" >d</input>
        </p>
        <p class='hidden'>
            <input type="checkbox" value="5" data-parent-id="3" >e</input>
        </p>       
    </p>
<script>
    $("#p1").children('input').each(function(){
       $(this).on('click',function(){
            var cValue = $(this).val();
            var isCheck = $(this).prop('checked');
            $("#p2 input").each(function(){
                if(cValue == $(this).data('parentId')){
                    $(this).attr('checked',isCheck);
                    if(isCheck){
                        $(this).parent().removeClass('hidden').addClass('show');
                    }
                    else{
                        $(this).parent().removeClass('show').addClass('hidden');
                    }
                }
            });
       })
    });
</script>

</body>
</html>
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