我正在处理一个涉及复选框功能的函数,我希望它检查选定的值是否已在数组中,如果是,请将其删除。有人“取消选中”复选框时就是这种情况。
public class Testing {
static void p(int i) {
System.out.println("hello" + i);
i++;
p(i);
}
public static void main(String[] args) {
p(1);
}
}
我希望在checkedCodes: any = [];
searchResultsCheckBox = (e) => {
var row = e.target.parentNode.parentNode;
var charge = row.getElementsByClassName('chargeList')[0] as HTMLElement;
var description = row.getElementsByClassName('descriptionList')[0] as HTMLElement;
this.selectedCode = charge.innerText + " (" + description.innerText + ")";
if (this.checkedCodes.includes(this.selectedCode)){
// What should I put here?
}
else {
this.checkedCodes.push(this.selectedCode);
}
}
语句中进行检查,以查看if
是否已经在数组selectedCode
中,如果是,则将其删除。任何建议都会有帮助
答案 0 :(得分:0)
您想知道如何从数组中删除项目吗?使用array.splice()
文档:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice
输入要开始删除的索引,然后输入要删除的项目数。
var arr = ['one', 'two', 'three', 'four', 'five'];
console.log(arr);
var pos = arr.indexOf('three');
arr.splice(pos, 1);
console.log(arr);
为了清楚起见,这是修改代码的方法
if (this.checkedCodes.includes(this.selectedCode)){
var pos = this.checkedCodes.indexOf(this.selectedCode)
this.checkCodes.splice(pos, 1);
}