function isHas(obj, key, str) {
const keyArr = obj.split('.');
let i = 0;
const is = (isObj, isKey) =>
isObj ? is(isObj[isKey], keyArr[++i]) : str;
const res = is(obj, keyArr[i]);
is = null;keyArr = null;i = null;obj = null;key = null;str = null;
return res;
}
var myObj = { a: 0 }
isHas(myObj, 'a.b.s') // undefined
isHas(myObj, 'a') // 0
/** 获取对象内指定属性的值 */
export function getObjVal(obj: Object, key: string, index: number = 0) {
const tkey = key.replace(/[|(].)/g, '.');
const keyArr = tkey.split('.');
const nIndex = index + 1;
if (keyArr.length < nIndex + 1) {
return obj;
}
if (!obj) {
return undefined;
}
return getObjVal(obj[keyArr[nIndex]], key, nIndex);
}
var myObj1 = { a: 0, b: { ba: { baa: ['text'] } } };
getObjVal(myObj1, 'myObj1.b.ba.baa[0]') // text
getObjVal(myObj1, 'b.ba.baa[0]', 1) // text
getObjVal(myObj1, 'myObj1.a') // 0
getObjVal(myObj1, 'myObj1.a.a') // undefined