取消选中一个复选框(如果另一个选中了javascript) [英] Uncheck a checkbox if another checked with javascript

问题描述

我有两个复选框字段.我想使用Javascript来确保只勾选一个复选框.(例如，如果勾选了一个checkbox1，如果勾选了checkbox2，则checkbox1将取消选中)

I have two checkbox fields. Using Javascript, I would like to make sure only one checkbox can be ticked. (e.g if one checkbox1 is ticked, if checkbox2 is ticked, checkbox1 will untick)

<input name="fries" type="checkbox" disabled="disabled" id="opt1"/>
<input type="checkbox" name="fries" id="opt2" disabled="disabled"/>

我还希望在其下方有一个单选按钮，如果单击该按钮，则希望取消选中两个复选框.

I would also like to have a radio button beneath, if this is clicked, I would like both checkboxes to be unticked.

 <input type="radio" name="o1" id="hotdog" onchange="setFries();"/>

做到这一点的最好方法是编写一个函数，还是我可以使用onclick语句?

Would the best way to do this be by writing a function, or could I use onclick statements?

推荐答案

好吧，您应该使用单选按钮，但是有些人喜欢复选框的外观，因此应该注意这一点.我在您的输入中添加了一个通用类:

Well you should use radio buttons, but some people like the look of checkboxes, so this should take care of it. I've added a common class to your inputs:

function cbChange(obj) {
    var cbs = document.getElementsByClassName("cb");
    for (var i = 0; i < cbs.length; i++) {
        cbs[i].checked = false;
    }
    obj.checked = true;
}

演示: http://jsfiddle.net/5uUjj/

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