[ajax] how to sending post data with & character

[phpguru]

here's my problem

when my input is: "asdasasd&=adasdasdsad"

at my ajax code:

send("test="+test);

~> output send("test=asdasasd&=adasdasdsad");

omg. so then, what's the htmlspecialchars ( PHP ) in javascript

[7stud]

encodeURIComponent()