上代码 此代码是将一个 item.imgsUrl 数组 转换一个数组内包含多个数组，且每个数组内只包含两个对象；
opendialog(item，type) {
if (type == 'icon') {
let arr = [];
let arr2 = [];
this.imgList = item.imgsUrl;
this.imgList.forEach((item, index) => {
arr2.push(item);
if (arr2.length == 2) {
arr.push(arr2);
arr2 = [];
}
if (this.imgList.length % 2 != 0 && index == this.imgList.length - 1) {
arr.push(arr2);
return;
}
});
this.imgList = arr;
if (this.imgList.length <= 2) {
this.imgList = [...arr]
}
}
},