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?
<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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