<!DOCTYPE html><html><body><img id="compman" src="compman.gif" lowsrc="compman_lowres.gif" alt="Computerman" width="107" height="98"><br><script>var x=document.getElementById("compman");document.write("<a href="" + x.lowsrc + "">Low resolution</a>");</script></body></html>希望本文所述对大家的javascript程序设计有所帮助。