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immutable.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>immutable测试</title>
</head>
<body>
<script src="./node_modules/immutable/dist/immutable.min.js"></script>
<script>
var map1 = Immutable.fromJS({
a: 45,
b: 64,
c: 72
})
var list1 = Immutable.fromJS([1, 2, 4, {
a: [1, 2, 3],
b: 64
}, 7, 8])
var map2 = map1.map(v => v * 10)
console.log(map2.toJS())
var map3 = map1.mapEntries(([k, v]) => [k.toUpperCase(), v * 2])
console.log(map3.toJS())
map1.map((v, k, m) => console.log(v, k, m))
console.log('getIn', list1.getIn([3, 'a', 0]))
console.log('getgetget', list1.get(3).get('a').get(0))
var layout = {
"group_name": "国家",
"children": [{
"obj_name": "china",
"display_name": "中国"
},
{
"group_name": "省份",
"children": [{
"obj_name": "henan",
"display_name": "河南"
},
{
"group_name": "城市",
"children": [{
"obj_name": "xinyang",
"display_name": "信阳"
},
{
"group_name": "区县",
"children": [{
"obj_name": "guangshan",
"display_name": "光山"
},
{
"group_name": "",
"children": [
]
}
]
}
]
}
]
}
]
}
var layoutMap = Immutable.fromJS(layout)
layoutMap.map((v, k) => console.log(v, k))
var list2 = layoutMap.get('children')
list2.map((v, k) => console.log(v, k))
var list3 = list1.filter((v, k) => {
if (v % 2 === 0) {
return true;
}
})
console.log(list3.toJS())
var list4 = list1.slice(1)
console.log('list4', list4.toJS())
console.log('list1', list1.toJS())
var map4;
map1.map((v, k) => {
if (v == 45) {
console.log('进来了')
map4 = map1.delete(k)
console.log(map1.toJS())
}
})
var map5 = map1.delete('c')
console.log(map4.toJS(), map5.toJS())
var list5 = Immutable.fromJS([{
group_name: '一级',
children: [{
name: 'one',
display_name: '标签1'
}]
}, {
group_name: '一级二',
children: [{
name: 'two',
display_name: '标签2'
},
{
group_name: '二级一',
children: [{
name: 'three',
display_name: '标签3'
}]
}
]
}, {
name: 'first',
display_name: '大标签'
}])
for (let i = 0, l = list5.size; i < l; i++) {
console.log(list5.get(i).toJS());
}
var list6 = list5.filter((v, k) => {
console.log(v.toJS(), k)
return v.get('group_name') !== '一级'
})
console.log(list6.toJS())
var a = [{
a: 1,
b: []
}, {
c: 'x',
d: 'y'
}, {
a: 2,
b: [{
c: 'x'
}, {
d: 'w'
}]
}]
a.forEach(function (v, i) {
console.log(v['c'])
if (v && v['c']) {
console.log('1,', a)
a.splice(i, 1)
}
if (v && v.b && v.b.length > 0) {
console.log('2,', a)
} else {
console.log('3,', a, i)
a.splice(i, 1)
i = 0
}
})
console.log(a)
var b = [1, 2, 3, 4, 5, 6]
b.forEach(b => console.log(b))
b.forEach((v, i) => {
if (v === 5) {
delete b[i]
}
console.log(v)
})
</script>
</body>
</html>