cs101 short notes lecture 23 to 45 2021

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cs101 short notes lecture 23 to 45 2021
cs101 short notes lecture 23 to 45 2021

cs101 short notes lecture 23 to 45 2021. 

Note:

Downlaod full short notes file from link available at the end of the page:

Lecture 23

JavaScript Variables are Dynamically Typed

Any variable that present in JavaScript can hold any type of value, and the that type of value can

change midway through the program.

 

See also:

mth101 final term solved papers by moaaz

eng101 final term solved papers by moaaz 2021

CS101- FINAL TERM SOLVED MCQS

 

 Lecture 24

Design Heuristics

Heuristic

A very important technique is available such as trial & errort hat   helps in learning of Rule of thumb.

Common sense lesson drawn from experience

Qualitative principle, guideline, general judgement

System

A System is a collection of different elements which working together produces a result that can not achieved by the things alone.

The structure  when we discuss in the terms of components, connections, constraints  of a product or a process.

 

Lecture 25

Web Design for Usability

Heuristic:

You must know that Heuristics does not always leads to the best results.

What‘s a Good Site?

  • The website which fullfils the requirements or one that achieves the result that it was designed for.

SPEED:

  • Users don’t read; they scan
  • Users do not make optimal choices; they search or look for the first good-enough solution
  • Users do not figure out that how things work; they muddle through.

Design is Important!:

  •  62% (Sixty two percent) of shoppers gave up looking for the item they wanted to buy online (Zona

Research)

  • 40% (forty percent) visitors don‘t return to a site if their first visit was a -ive experience

(Forrester Research)

  • 83% (Eighty three percent) of users have left sites in frustration due to poor navigation, slowness

(NetSmart Research)

JavaScript Variables are Dynamically Typed

Any variable which available in JavaScript can hold any type of value, & the that type of value can be change midway through the program.

 

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