TypeError: this.alertService.danger is not a function 这是我的组件, import { Component, OnInit, ViewChild,this.noOfNulls){ this.alertService.danger("Pleaseelse if(this.noOfNulls==1) {
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我有这样的代码:A room has a number called danger level.The danger level of a room is usually 0.danger level by 1.Every turn (this is the danger explanation rule):`In the sentence 'say the <e