Best practice: escape, or encodeURI / encodeURIComponent

escape("% +&=");

encodeURI("http://www.google.com?var1=value1&var2=value2");

encodeURIComponent("var1=value1&var2=value2");

encodeURI("http://www.google.com/a file with spaces.html")

http://www.google.com/a%20file%20with%20spaces.html

http%3A%2F%2Fwww.google.com%2Fa%20file%20with%20spaces.html

param1 = encodeURIComponent("http://xyz.com/?a=12&b=55")

url = "http://domain.com/?param1=" + param1 + "&param2=99";

http://www.domain.com/?param1=http%3A%2F%2Fxyz.com%2F%Ffa%3D12%26b%3D55&param2=99