Reading-Notes

Opertators And Loops

comparision Operators:

Evaluating Conditions:

evaluate Situation By comparing one value in the script to what you expect it might be. the result will be Boolean : true or false

##### examples: == is equal to != is not equal to === strict equal to !== strict not equal to

greater than < less than = greater than or equal to <= less than or equal to

Logical OPerators:

allow you to compare the results of more than one comparision operator>

&& Logical And || Logical Or ! Logical Not

Loops:

Loops check a condition. If it returns true, a code block will run. the condition will be checked again , it repeats until the condition return a false.

example :

for (var i=0; i<10; i++>) {document.write(i);}

While Loop:

example:

var i = l ; var msg = ‘ ‘ ; II Set counter to 1 II Message II Store 5 times tabl e in a variable while (i < 10) { msg += i + ‘ x 5 = ‘ + (i * 5) + ‘
’; i++; document .getEl ementByid( ‘ answer’) . innerHTML = msg;

This loop will continue to runfor as long as the condition in the parentheses is true. That condition is a counter indicating that, as long as the variable i remains less than 10, the statements in the subsequent code block should run.

Thank You Sukina AbuHammad