Limit number of checkboxes to be selected, jQuery [closed]

问题

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Closed 6 years ago.

A simpler version of this question has already been posted, but I'm having some difficulty.

Say I have 5 checkboxes:

• None
• Apple
• Banana
• Orange
• Pear

The user is allowed to select two checkboxes, but if "None" is chosen, they can only select one.

Is that possible at all?

回答1:

Try to play with this example:

var checked = [],
$check = $('.check').change(function() {
    if (this.value == -1 && this.checked) {
        $check.not(this).prop('disabled', true).prop('checked', false);
        checked = [];
    }
    else {
        $check.prop('disabled', false);
        checked.push(this);
        checked = $(checked)
        checked.prop('checked', false).slice(-2).prop('checked', true);
    }
});

http://jsfiddle.net/q7Dve/

来源：https://stackoverflow.com/questions/16337625/limit-number-of-checkboxes-to-be-selected-jquery