关于js 变量作用域的小记录

var scope="global";
function t(){
<span style="white-space:pre">	</span>console.log(scope);
var scope="local"
console.log(scope);
}
t();

var scope="global";
function t(){
<span style="white-space:pre">	</span>var scope;
console.log(scope);
scope="local"
console.log(scope);
}
t();