如何通过勾选当前部分内的复选框来勾选其他部分的所有复选框?

问题描述

胡闹的小提琴还可以，请在下面阅读我需要更改的内容.

The folliwing fiddle is ok, read below what I need to change at it.

http://jsfiddle.net/V5SSM/14/

您单击☑1.1小节，然后单击所有其他按钮:

You click on ☑ Subsection 1.1 and then all other get clicked:

• ☑2.1小节
• ☑2.2小节
• ☑第2.3小节
• ☑2.4小节
• ☑3.1小节
• ☑3.2​​小节
• ☑第3.3节
• ☑3.4小节

这是HTML树:

第1节

Subsection 1.1
Subsection 1.2
Subsection 1.3
Subsection 1.4

第2节

Subsection 2.1
Subsection 2.2
Subsection 2.3
Subsection 2.4

第3节

Subsection 3.1
Subsection 3.2
Subsection 3.3
Subsection 3.4

更多详细信息:

您可以看到当前的jsfiddle示例有效.它可以勾选当前部分的所有复选框，同时勾选当前部分内部的一个复选框.我希望它的工作原理相同，但不要在其自己部分的复选框中打勾，而不是在其他部分的所有其他复选框上打勾.

You can see that the current jsfiddle example works. It works to tick all checkboxes of the current section while ticking one checkbox from inside the current section. I want it to work the same, but not to tick checkboxes of its own section, rather to tick all other checkboxes of the other sections.

示例:我用小节1.1"选择了不是小节1的所有其他小节."1.1小节"应选择其他所有内容:2.1小节，2.2小节，2.3小节，2.4小节，3.1小节，3.2小节，3.3小节，3.4小节

Example: I select with "Subsection 1.1" all other sections that are not Section 1."Subsection 1.1" should select all other: Subsection 2.1, Subsection 2.2, Subsection 2.3, Subsection 2.4, Subsection 3.1, Subsection 3.2, Subsection 3.3, Subsection 3.4

推荐答案

您可以通过将处理程序附加到第一个公共祖先上，使用事件委托机制来处理所有复选框的单击:

You can handle click on all checkboxes using event delegation mechanism by attaching the handler on the first common ancestor :

var type = 'input[type="checkbox"]';
$('#selectAllButton').on('click', function () {
    $(type).prop('checked', true).closest('label').addClass('c_on');
});
$('#selectNoneButton').on('click', function () {
    $(type).prop('checked', false).closest('label').removeClass('c_on');
});

// event Delegation
$('#docbuilder').click(function(e){
    var $t = $(this),
        $tar = $(e.target); // The node that has been clicked
    // If checkbox
    if($tar.is(type)){
        var cbRemaining = $tar.closest('blockquote').find(type+':checked').length, /* counting how many checked checkboxes remain inside the current section */
            $otherCb = $t.children(':nth-child(n+3)').not($tar.closest('.document')[0]).find(type), /* Retrieve all checkboxes except the ones that belong to the current section */
            state = $tar.prop('checked'); // get the checked property of the checkbox beiing clicked
        // If subsection checkbox
        if($tar.closest('.subsection').length){
            if( !cbRemaining ){
                $tar.closest('blockquote').prev().find(type).prop('checked', false);
            }
            if( !cbRemaining || cbRemaining==1 && state){
                $otherCb.prop('checked', state);
            }
            $tar.parent()[(state ? 'addClass':'removeClass')]('c_on'); // should we add or remove the color class on the checkbox label
        // If section checkbox
        } else if($tar.closest('.section').length){
            if(state)  $otherCb.prop('checked', false);
            $tar.parent().siblings().find(type).prop('checked', state)
            .parent()[(state ? 'addClass':'removeClass')]('c_on');

        }
    }
});

您可能需要根据一些尚未考虑的约束条件对此代码进行一些修改.

You may need to modify this code a bit accordingly to some constraints not yet taken into account.

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