function removeNumbersLargerThan(num, obj) {
for (var key in obj) {
if (!isNaN(obj[key]) && obj[key] > num) {
delete obj.key;
}
}
return obj;
}
var obj = {
a: 8,
b: 2,
c: 'montana'
}
removeNumbersLargerThan(5, obj);
console.log(obj); // Should be {b: 2, c: 'montana'}
该函数应删除符合" for" for'for'for'for'for'for'的任何属性。
您错过了方括号,同时定义删除对象键。
function removeNumbersLargerThan(num, obj) {
for (var key in obj) {
if (!isNaN(obj[key]) && obj[key] > num) {
delete obj[key];
}
}
return obj;
}
var obj = {
a: 8,
b: 2,
c: 'montana'
}
removeNumbersLargerThan(5, obj);
console.log(obj); // Should be {b: 2, c: 'montana'}
您应该将delete obj.key;
替换为delete obj[key];