Information Technology Reference
In-Depth Information
of.a.page.are.needed.as.you.are.moving.around,.clicking.on.
links,.holding.your.mouse.cursor.over.a.part,.or.just.moving.
between.different.areas.of.the.site,.they.are.quickly.accessed.
from. the. cache. ile. and. displayed. or. acted. upon. by. the.
browser.application,.thus.enhancing.your.Internet.experience.
and.speeding.everything.up..Also,.when.and.if.you.return.to.
that.site,.the.same.cached.data.can.be.reused.to.speed.up.the.
reloading.of.that.Web.page.
Let's.look.at.an.example.of.a.single.page.and.consider.all.
of.the.different.types.of.data.that.might.be.loaded.into.cache,.
as.well.as.their.utility.or.reason.for.being.
You.can.try.this.at.home.any.time.you.feel.the.urge..In.
most.every.browser.there.will.be.an.option.under.the.View.
menu.to.view.the.source.code.or.just.the.source..In.the.newer.
versions.of.Internet.Explorer.you.ind.this.choice.at.the.bot-
tom.of.the.Page.menu,.for.instance..If.you.do.open.up.the.
source.view,.you.are.treated.to.pure.HTML.code..I.know—
this.is.terribly.exciting,.but.try.to.contain.your.enthusiasm.
At. the. top. of. that. source. page. you. see. header. informa-
tion.. As. noted. above,. a. forensics. person. would. be. looking.
for.this.type.of.information.in.hexadecimal.code.to.help.him.
or.her.recognize.the.beginning.of.a.piece.of.HTML.code,.or.
the.start.of.a.Web.site..This.header.information.will.tell.what.
type.of.document.coding.is.being.used.and.might.show.the.
Internet.address.or.URL.
As. you. move. down. the. page. you. see. a. lot. of. different.
types.of.coding.that.tell.the.browser.application.what.to.show.
the. viewer.. We. are. not. going. to. learn. HTML. coding. here.
(whew!),. but. sufice. it. to. note. that. everything. that. happens.
when.you.view.a.Web.site.is.coded.in.that.source.view..You.
may.note.things.like.scripts,.java,.href,.and.so.forth..These.
are.all.programming.language.that.results.in.different.actions.
or.links.or.pictures.appearing.on.the.page.
If. you. were. to. examine. the. source. page. carefully. and.
compare.it.to.what.you.actually.see.when.you.are.looking.at.
the.Web.site.(as.only.a.true.geek.like.myself.might.attempt—
and.I.
have
.in.order.to.save.you.the.pain),.you.would.notice.
