SOURCE

var globalVariable1 = 0;

function test1() {
    
    var localVariable1 = 2;
    document.write(localVariable1+ "<br/>");
    //打印globalVariable1
    document.write(globalVariable1 + "<br/>");

    //打印localVariable1
    document.write(localVariable1+ "<br/>");
}

//打印localVariable1
document.write(test1.localVariable1);

//打印globalVariable2
document.write(globalVariable1 + "<br/>");


test1();

var globalVariable2 = 1;

function test2() {
    var localVariable2 = 3;

    //打印localVariable1
    document.write(localVariable2 + "<br/>");

}
document.write(test2.localVariable2 + "<br/>");

test2();

//打印localVariable2

//打印globalVariable1
document.write(globalVariable1 + "<br/>");