What’s a variable? Let’s suppose x=5.
x is a variable. The statement x=5 declares that the value of x is now 5. Can x be something else? Sure, x=6. Now x equals 6. (Hence the name “variable”… it’s value can vary.)
Can a variable be something other than a number? Sure. How about x=”Joe”. Now x equals the string “Joe”. (A string by the way is a string of characters… and strings are always enclosed in quotes.)
Can the name of a variable be something other than a letter like x? Sure, myname=”Joe”. Simple.
How can we incorporate this new found knowledge into our function? Easy…
myname = "Joe";
(Note again that strings are always enclosed in quotes, but variables are not.)
We could make it say Hello + variable…
myname = "Joe";
alert("Hello " + myname);
Making pages dynamic, ie pages, the content of which may change after loading.
Verification of user forms.
Decision “local” tasks using scripts.
the creation of dynamic, interactive Web pages, ie, pages whose content may change after loading the document;
Verification of user forms before forwarding them to the server;
decision “local” tasks using scripts and some other areas.
cursor Ustanavlivaet cursor shape when it is within the cell. The cursor depends on the operating system and installed options.
Before you take the opportunity to alter the cursor, choose, and whether it will be used to the place. Many users of such changes can be misleading when, for example, instead of the traditional hand that appears when you hover over a link, there is something else. In most cases, it is better to leave everything as it is.
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