1.JavaScript中如何检测一个变量是一个String类型?请写出函数实现
function a(obj){
return typeof(obj)==“string”;
}
console.log(a(123));
console.log(a(“abc”));
1.JavaScript中如何检测一个变量是一个String类型?请写出函数实现
function a(obj){
return typeof(obj)==“string”;
}
console.log(a(123));
console.log(a(“abc”));