原文地址：https://www.jb51.net/article/150127.htmcss
一、模拟实现多选框：小程序
实现思路：思路很是简单，给每一个选项绑定checked属性，类型为布尔值，点击取反便可dom
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<
view
class
=
'wrap'
>
<
view
class
=
'checkbox-con'
>
<
checkbox-group
bindchange
=
"checkboxChange"
>
<
label
class
=
"{{item.checked?'checkbox checked':'checkbox'}}"
wx:for
=
"{{checkboxArr}}"
bindtap
=
'checkbox'
data-index
=
"{{index}}"
wx:key
=
"item.name"
>
<
checkbox
value
=
"{{item.name}}"
checked
=
"{{item.checked}}"
/>{{item.name}}
</
label
>
</
checkbox-group
>
<
button
type
=
'primary'
bindtap
=
'confirm'
>提交</
button
>
</
view
>
</
view
>
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小程序的单选组件radio和多选组件checkbox的样式只提供更改颜色，这对实际项目中的需求显然是不够的，因此本身模拟实现一个。xss
踩坑点：小程序不支持操做domthis
一、模拟实现多选框：spa
实现思路：思路很是简单，给每一个选项绑定checked属性，类型为布尔值，点击取反便可.net
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<
view
class
=
'wrap'
>
<
view
class
=
'checkbox-con'
>
<
checkbox-group
bindchange
=
"checkboxChange"
>
<
label
class
=
"{{item.checked?'checkbox checked':'checkbox'}}"
wx:for
=
"{{checkboxArr}}"
bindtap
=
'checkbox'
data-index
=
"{{index}}"
wx:key
=
"item.name"
>
<
checkbox
value
=
"{{item.name}}"
checked
=
"{{item.checked}}"
/>{{item.name}}
</
label
>
</
checkbox-group
>
<
button
type
=
'primary'
bindtap
=
'confirm'
>提交</
button
>
</
view
>
</
view
>
|
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.wrap{
width
:
550
rpx;
margin
:
50
rpx
auto
}
.checkbox-con{
margin-top
:
40
rpx;
text-align
:
center
}
.checkbox{
width
:
260
rpx;
height
:
72
rpx;
line-height
:
72
rpx;
font-size
:
28
rpx;
color
:
#888888
;
border
:
1
rpx
solid
#CECECE
;
border-radius:
5
rpx;
display
: inline-
block
;
margin
:
0
10
rpx
20
rpx
0
;
position
:
relative
}
.checked{
color
:
#1A92EC
;
background
: rgba(
49
,
165
,
253
,
0.08
);
border
:
1
rpx
solid
#31A5FD
;
}
.checkbox checkbox{
display
:
none
}
.checked-img{
width
:
28
rpx;
height
:
28
rpx;
position
:
absolute
;
top
:
0
;
right
:
0
}
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js: code
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Page({
data: {
checkboxArr: [{
name:
checked: false
}, {
name:
checked: false
}, {
name:
checked: false
}, {
name:
checked: false
}, {
name:
checked: false
}, {
name:
checked: false
}],
},
checkbox: function (e) {
var index = e.currentTarget.dataset.index;//获取当前点击的下标
var checkboxArr = this.data.checkboxArr;//选项集合
checkboxArr[index].checked = !checkboxArr[index].checked;//改变当前选中的checked值
this.setData({
checkboxArr: checkboxArr
});
},
checkboxChange: function (e) {
var checkValue = e.detail.value;
this.setData({
checkValue: checkValue
});
},
confirm: function() {// 提交
console.log(this.data.checkValue)//全部选中的项的value
},
})
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二、模拟实现单选框xml
思路：这个和多选差很少，区别就是须要在点击时清空其余项的选中状态，而后再把当前项设置为选中状态htm
代码也差很少
wxml的话就把check-group标签改成radio-group; js那边就在点击时多加个判断
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<
view
class
=
'wrap'
>
<
view
class
=
'checkbox-con'
>
<
radio-group
bindchange
=
"radioChange"
>
<
label
class
=
"{{item.checked?'checkbox checked':'checkbox'}}"
wx:for
=
"{{checkboxArr}}"
bindtap
=
'radio'
data-index
=
"{{index}}"
wx:key
=
"item.name"
>
<
checkbox
value
=
"{{item.name}}"
checked
=
"{{item.checked}}"
/>{{item.name}}
</
label
>
</
radio-group
>
<
button
type
=
'primary'
bindtap
=
'confirm'
>提交</
button
>
</
view
>
</
view
>
|
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Page({
data: {
checkboxArr: [{
name:
'选项A'
,
checked:
false
}, {
name:
'选项B'
,
checked:
false
}, {
name:
'选项C'
,
checked:
false
}, {
name:
'选项D'
,
checked:
false
}, {
name:
'选项E'
,
checked:
false
}, {
name:
'选项F'
,
checked:
false
}],
},
radio:
function
(e) {
var
index = e.currentTarget.dataset.index;
var
checkboxArr =
this
.data.checkboxArr;
if
(checkboxArr[index].checked)
return
;
checkboxArr.forEach(item => {
item.checked =
false
})
checkboxArr[index].checked =
true
;
this
.setData({
checkboxArr: checkboxArr
});
},
radioChange:
function
(e) {
var
checkValue = e.detail.value;
this
.setData({
checkValue: checkValue
});
},
confirm:
function
() {
console.log(
this
.data.checkValue)
},
})
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最后上个效果截图
