Javascript基础知识总结(代码篇)

Javascript总结（代码篇）

1)Alert box

(2) confirm box

(3)

Prom pt box

(4)

Call a function1

onclick="m yfunction()"

value="Call function">

By pressing the button, a function will be called. The function will alert a m essage.

(5)

Function with an argum ent

onclick="m yfunction('Hello')"

value="Call function">

By pressing the button, a function with an argum ent will be called. The function will alert

this argum ent.

(7)Function with an argum ent 2

onclick="m yfunction('Good Morning!')"

value="In the Morning">

onclick="m yfunction('Good Evening!')"

value="In the Evening">

When you click on one of the buttons, a functi on will be called. The function will alert the argum ent that is passed to it.

(8)

Function_return

The script in the body section calls a function.

The function returns a text.

(9)

The script in the body section calls a function with two param eters (4 and 3).

The function will return the product of these two param eters.

(10)

for

Explanation:

This for loop starts with i=0.

As long as i is less than, or equal to 5, the loop will continue to run.

i will increase by 1 each tim e the loop runs.

(11)

(12)

while

Explanation:

i is equal to 0.

While i is less than , or equal to, 5, the loop will continue to run.

i will increase by 1 each tim e the loop runs.

(13)

do...while

Explanation:

iequal to 0.

The loop will run

i will increase by 1 each tim e the loop runs.

While i is less than , or equal to, 5, the loop will continue to run.

(14)

break

Explanation: The loop will break when i=3.

(15)

try...catch