Mobile Development - Lecture 7

 

 Mobile Development- Using React Native - Lecture 7

Lecture Outcome:

At the end of the lecture, students will be able to know about

• Recap
• run js file lecture7Test.js
• run switchPractice.js
• js syntax is different

### Recap
    `programming basics p3,p4, -> data-types, conditional operators,`
    number, string, object, boolean, 
    opertors,
     if , if else, ifelseif
     

`
    if(x===3) {

    }else if(x===4){

    }else if (x===10) {

    }else {

    }
`


<!-- WHEN TO USE IF and WHEN NOT USE IT -->

<!-- 
    - when you have more than 5 checks DONT USE IF  ELSE
        - e.g. CAPITAL LETTER, number, special character, small letter, total length 8,  EMPTY PASSWORD, not have white spacce
 -->

 <!-- WE HAVE ANOTHER CONDITIONAL HELPER CALLED SWITCH/WHEN -->

lecture7Test.js

const x = 202020

if(x === 10){

    console.log("===========");
    console.log(x);
    console.log("===========");

}else if(x===22){

    console.log("===========");
    console.log(x);
    console.log("===========");


}else if(x===33){

    console.log("===========");
    console.log(x);
    console.log("===========");

}else {

    console.log("===========");
    console.log('last else block chla');
    console.log("===========");

}


switchPractice.js
const x = 89898

switch(x){ 
    case 33: {
        console.log("33")
        break
    }
    case 22: {
        console.log("22")
        break
    }
    case 11: {
        console.log("11")
        break
    }
    default: console.log("defualt")
}



// SWITHC MULTI CASE ASSIGNMENT ISSUE

const x = 33

switch(x){ 
    case 33,22,11: {
        console.log("jpafjafjj")
    }
    default: console.log("defualt")
}

// swith k andr multiple case combinings 
// for same out put!




# TALK
 -> when you are learning something 
    -> teacher agnostic
    -> forget what you know already
        -> e.g. if glass if full and you poure the water will out flow
    -> proud ( is a sin ) so dont be like that

-> TECH PEOPEL
    -> JAVA
    -> KOTLIN
    -> SWIFT
    -> C #
    -> DOT NET
    -> python

SYNTEX DIFFER FROM EACH OTHER,
 JAVASCRIPT ( IS DIFFERENT )