1、常见的数据类型转换
原始值 | 转换为数字 | 转换为字符串 | 转换为布尔值 | |
false |
0 |
"false" |
false |
|
true |
1 |
"true" |
true |
|
0 |
0 |
"0" |
false |
|
1 |
1 |
"1" |
true |
|
"0" |
0 |
"0" |
true |
|
"000" |
0 |
"000" |
true |
|
"1" |
1 |
"1" |
true |
|
NaN |
NaN |
"NaN" |
false |
|
Infinity |
Infinity |
"Infinity" |
true |
|
-Infinity |
-Infinity |
"-Infinity" |
true |
|
"" |
0 |
"" |
false |
|
"20" |
20 |
"20" |
true |
|
"Runoob" |
NaN |
"Runoob" |
true |
|
[ ] |
0 |
"" |
true |
|
[20] |
20 |
"20" |
true |
|
[10,20] |
NaN |
"10,20" |
true |
|
["Runoob"] |
NaN |
"Runoob" |
true |
|
["Runoob","Google"] |
NaN |
"Runoob,Google" |
true |
|
function(){} |
NaN |
"function(){}" |
true |
|
{ } |
NaN |
"[object Object]" |
true |
|
null |
0 |
"null" |
false |
|
undefined |
NaN |
"undefined" |
false |
posted @
2017-03-14 21:06
欢乐之家
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