数组循环属性：for，map，filter，foreach
结论：除了for，其他都不能通过return false，终止循环
代码
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
var data = [1,2,3,4,5]
var arr = [
{text: ‘张三‘, age: 9},
{text: ‘李四‘, age: 20},
{text: ‘王五‘, age: 20},
{text: ‘赵六‘, age: 20}
]
function a() {
for(var i=0; i<5; i++) {
console.log(i);
return false
}
}
function b() {
data.filter(v => {
console.log(v)
return false
console.log(‘哈哈‘)
})
}
function c() {
return arr.map((v, k) => {
if (v.age>10) {
return v.text
} else {
return ‘‘
}
})
}
function d() {
arr.forEach((v, k) => {
console.log(v)
return false
})
}
console.log(a())
console.log(‘a---------------------------‘)
console.log(b())
console.log(‘b---------------------------‘)
console.log(c())
console.log(‘c---------------------------‘)
console.log(d())
console.log(‘d---------------------------‘)
console.log(‘for之后‘);
</script>
</body>
</html>
结果如图：
参考：http://es6.ruanyifeng.com/
时间： 2024-11-08 01:04:39