如何使用 Angular 2 和 TypeScript 以一定延迟循环遍历数组?
我有一个数组,
students: Array<any> = [
{
name: "Alan"
},
{
name: "Jake"
},
{
name: "Harry"
},
{
name: "Susan"
},
{
name: "Sarah"
},
{
name: "Esther"
}
];
我想循环遍历列表并用 a 显示名称2000ms
delay.
<div *ngFor="let student of students">
{{student.name}}
</div>
不能延迟工作,但会立即循环。
只需使用setTimeout
。例如(*未测试):
students: Array<any> = [ ];
populateArrayWithDelay():void{
let people = [
{
name: "Alan"
},
{
name: "Jake"
},
{
name: "Harry"
},
{
name: "Susan"
},
{
name: "Sarah"
},
{
name: "Esther"
}
];
for(let i = 0; i < people.length; i++){
let student = people[i];
setTimeout(() => {
this.students.push(student);
}, 2000*(i+1));
}
}
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