JavaScript达成input持续输入，只发一次要求

handleSearch() {
if (this.keyword != ) {
// 实现input连续输入，只有一个请求
clearTimeout(this.timeout)
this.timeout = setTimeout(() => {
this.pageNum = 1;
this.finished = false;
this.total = 0;
this.orderList = [];
this.onLoadMore();
}, 1000)

}
}