是否可以在jquery中点击按钮时编写如何进行选择/取消选择功能？
<ul style="list-style:none">
<li>
<label><input class="checkhour" type="checkbox"> One</label>
</li>
<li>
<label><input class="checkhour" type="checkbox"> Two</label>
</li>
<li>
<label><input class="checkhour" type="checkbox"> Three</label>
</li>
<li><button type="button" class="checkall">select/deselect</button></li>
</ul>
我尝试用几种方式做到这一点，但他们都不想工作。
答案 0 :(得分：6)
您可以通过分配全局变量来检查先前的条件：
var clicked = false;
$(".checkall").on("click", function() {
$(".checkhour").prop("checked", !clicked);
clicked = !clicked;
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul style="list-style:none">
<li>
<label>
<input class="checkhour" type="checkbox">One</label>
<label>
<input class="checkhour" type="checkbox">Two</label>
<label>
<input class="checkhour" type="checkbox">Three</label>
</li>
<li>
<button type="button" class="checkall">select/deselect</button>
</li>
</ul>
答案 1 :(得分：1)
您可以使用input checkbox获取所有getElementsByTagName并使用属性checked = true
var isChecked = false;
function checkAll() {
var checkboxes = document.getElementsByTagName('input');
if (isChecked) {
for (var i = 0; i < checkboxes.length; i++) {
if (checkboxes[i].type == 'checkbox') {
checkboxes[i].checked = true;
}
}
} else {
for (var i = 0; i < checkboxes.length; i++) {
console.log(i)
if (checkboxes[i].type == 'checkbox') {
checkboxes[i].checked = false;
}
}
}
isChecked = !isChecked;
}<ul style="list-style:none">
<li>
<label><input class="checkhour" type="checkbox"> One</label>
<label><input class="checkhour" type="checkbox"> Two</label>
<label><input class="checkhour" type="checkbox"> Three</label>
</li>
<li><button type="button" class="checkall" onClick="checkAll()">select/deselect</button></li>
</ul>
答案 2 :(得分：1)
var state = false; // desecelted
$('.checkall').click(function () {
$('.checkhour').each(function() {
if(!state) {
this.checked = true;
} else {
this.checked = false;
}
});
//switch
if (state) {
state = false;
} else {
state = true;
}
});
和jsfiddle给你 http://jsfiddle.net/0jazurdu/
答案 3 :(得分：0)
您好，您必须在您的html脚本中包含jquery，并按照以下代码进行操作
<ul style="list-style:none">
<li>
<label><input class="checkhour" name="checkme[]" type="checkbox"> One</label>
<label><input class="checkhour" name="checkme[]" type="checkbox"> Two</label>
<label><input class="checkhour" name="checkme[]" type="checkbox"> Three</label>
</li>
<li><button type="button" id="selectall" >select/deselect</button></li>
</ul>
在下面添加jquery脚本以选中所有复选框。
<script type="text/javascript">
$(document).ready(function() {
$('#selectall').click(function(event) { //on click
var atLeastOneIsChecked = $('input[name="checkme[]"]:checked').length > 0;
if(atLeastOneIsChecked){
$('.checkhour').each(function() { //loop through each checkbox
this.checked = true; //select all checkboxes
});
}else{
$('.checkhour').each(function() { //loop through each checkbox
this.checked = false; //deselect all checkboxes
});
}
});
});
</script>
答案 4 :(得分：0)
1）JS：
$(document).ready(function() {
var base_url = "<?php echo base_url(); ?>";//alert(base_url);
$('#inputtype').on('change', function() {
if (this.value == '1') {
$("#groupname").change(function() {
$('#myModal').modal('hide');
});
}else if(this.value == '2'){
$('#checkb').hide();
$("#groupname").change(function() {
var id = $(this).val();
if(id!=0){
$.ajax({
type: "GET",
url: base_url+"groupsms/ajaxdata",
// dataType: 'json',
data: {groups_id:id},
success: function(data) {
console.log(data);
var obj = JSON.parse(data);
for(var i = 0, len = obj.length; i < len; i++) {
$("#myInput").on("keyup", function() {
$('#checkb').show();
var value = $(this).val().toLowerCase();console.log(value);
$("#myTable #tablerow").filter(function() {
$(this).toggle($(this).text().toLowerCase().indexOf(value) > -1)
console.log($(this).toggle($(this).text().toLowerCase().indexOf(value) > -1));
});
});
var checkbox ='<input type="checkbox" id="checkbox" class = "chcktbl" name="findt" value="'+obj[i].id+'" />';
var temp = '<tr id="tablerow"><td>' + obj[i].id + '</td>';
temp+='<td>' + checkbox + '</td>';
temp+= '<td>' + obj[i].msisdn+ '</td>';
temp+= '<td>' + obj[i].name + '</td>';
$('#tbody').append(temp);
}
var selected = [];
// alert("function");
$('.chcktbl').click(function(event){
var length = $('.chcktbl:checked').length; //alert(length);
if (length > 0) {
// alert("greater");
if($(this).is(':checked')){
selected.push(this.value);
//alert(selected);
$('input[name=hiddeninputname]').val(selected);
}else{
// alert("not checked");
selected.pop(this.value);
$('input[name=hiddeninputname]').val(selected);
}
}
});
$('button#submit').click(function(event){ //alert("HEIII");
if($('[type="checkbox"]').is(":checked")){
$('#myModal').modal('hide');
return true;
}
else
{
$('#myModal').modal('show');
$('input[name=hiddeninputname]').val("") ;
$("div#errMsg1").css("color", "red");
$("div#errMsg1").html("Please click on checkbox");
return false;
}
});
$('#checkb').click(function () {
if (this.checked == false) {
$('.chcktbl:checked').attr('checked', false);
for(var j = 0; len1 = selected.length; j++) {
selected.pop(selected[j]);
}
}
else {
$('tbody > tr:visible .chcktbl:not(:checked)').attr('checked', true);
var length = $('.chcktbl:checked').length;
var MyChkValue = $('.chcktbl:checked').val();
$(".chcktbl:checked").each(function(){
selected.push($(this).val());
$('input[name=hiddeninputname]').val(selected);
// alert(selected);
});
}
});
$('#myModal').modal('show');
}
});
}
});
}
});
});
2）HTML：
<div class="modal-body" id="employee_detail">
<table style="width: 100%" border="1" style="text-align:center">
<thead>
<tr>
<th>ID</th>
<th>Select All
<?php $numberCheck = array( 'name' => 'checkb', 'id' => 'checkb','required'=>'required', 'value' => '', 'checked' => set_checkbox('checkb', 'checkb')); ?>
<?php echo form_checkbox($numberCheck); ?>
</th>
<th>Number</th>
<th>Name</th>
</tr>
</thead>
<tbody id="tbody">
</tbody>
</table>
</div>
<div id="errMsg1"></div>
<div class="modal-footer">
<button type="submit" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" id="submit" class="btn btn-primary" data-toggle="modal" data-target="#myModal" >OK</button>
</div>