当用户每次使用
Jquery检查复选框时,我试图显示复选框位置.例如,当用户检查星期一时,它将显示位置0,当用户检查星期日时,它将显示位置6.我找不到办法.我曾尝试使用.index()但它一直向我显示0.如何做到这一点的任何想法?
HTML代码
<div class="col-sm-9 checkbox_days"> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Monday"> Monday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Tuesday"> Tuesday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Wednesday"> Wednesday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Thursday"> Thursday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Friday"> Friday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Saturday"> Saturday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Sunday"> Sunday </label> </div>
JQuery的
$('.day').on('change',function() { $(this).each(function() { if (this.checked) { alert($(this).index()); } else { alert("unchecked"); } }); });
解决方法
您需要使用
.index(element)
在列表中查找元素索引.
$('.day').index(this)
If no argument is passed to the .index() method,the return value is an integer indicating the position of the first element within the jQuery object relative to its sibling elements.
$(function() { $('.day').on('change',function() { if (this.checked) { alert($('.day').index(this)); } else { alert("unchecked"); } }); });
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="col-sm-9 checkbox_days"> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Monday">Monday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Tuesday">Tuesday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Wednesday">Wednesday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Thursday">Thursday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Friday">Friday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Saturday">Saturday </label> <label class="checkbox"> <input type="checkbox" class="day" name="day[]" value="Sunday">Sunday </label> </div>
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