原创 js中變量的作用域
1.window.onload=function(){ var num=2; function test1(){ num=1; } test1(); alert(num);}結果:42.window.
原创 js中變量的作用域
1.window.onload=function(){ var num=2; function test1(){ num=1; } test1(); alert(num);}結果:42.window.
1.window.onload=function(){ var num=2; function test1(){ num=1; } test1(); alert(num);}結果:42.window.
1.window.onload=function(){ var num=2; function test1(){ num=1; } test1(); alert(num);}結果:42.window.