Q148.)

let {key1, key2, key3} = obj1;

document.write( key1, key2, key3);

Q149.)<script>
let obj = {
key1:{
frontend: "Angular14",
backend:"Dotnet",
database:"SqlServer"
}
}
//let {key1} =obj;
//let {frontend} =key1;
document.write(obj.key1.frontend,obj.key1.backend,obj.key1.database);
</script>

Q150).

<script>
let obj3={
key1 :{
key2 :{
message :bye //bye
}
}
};
let over=obj3.key1;
let sai=over.key2;
document.write(sai.message);
</script>

Q151). <script>
let obj5={
key1 : "ReactJs",
key2 : {
sub : "NodeJs"
},
key3 : {
sub : "MongoDB"
}
};
let {key1,key2,key3}=obj5;

let {sub : sub1} = key2;
let {sub : sub2} = key3;
document.write(`<table border="1"
align="center">
<tr>
<th>Frontend</th>
<th>Backend</th>
<th>Database</th>
</tr>
<tr>
<td>${key1}</td>
<td>${sub1}</td>
<td>${sub2}</td>
</tr>
</table> `);

Q152).

<script>
let obj6={
key1 : {
sub1:ReactJs
},
key2 :{
sub2:MongoDb
},
key3 :{
sub3:NodeJs
}
};
let object1 =obj6.key1;
let inner1=object1.sub1;
let object2 =obj6.key2;
let inner2=object2.sub2;
let object3=obj6.key3;
let inner3=object3.sub3;
document.write(inner1,inner2,inner3);
</script>

Q153). <script>
let obj7={
key1: Hello_1,
key2:{
msg:Hello_2
}
};
let over=obj7.key1;
let come=obj7.key2;
let ver2=come.msg;
document.write(over,ver2);
</script>

Q154). <script>
let obj5 ={
key1:function(){
return 'Welcome to anonymous function';
}
};
let my_func = obj5.key1;
let over = my_func();
document.write(over);
</script>

Q155).<script>
let obj9 = [{p_id:111,p_name:"p_one",p_cost:10000},
{p_id:222,p_name:"p_two",p_cost:20000},
{p_id:333,p_name:"p_three",p_cost:30000},
{p_id:444,p_name:"p_four",p_cost:40000},
{p_id:555,p_name:"p_five",p_cost:50000}];

document.write(`<table border="1" align="center" cellpadding="10px" cellspacing="10px">

<tr>
<td>p_id</td>
<td>p_name</td>
<td>p_cost</td>
</tr>`);
obj9.forEach(function(element,index){
document.write(`
<tr>
<td>${element.p_id}</td>
<td>${element.p_name}</td>
<td>${element.p_cost}</td>
</tr>`)
});
document.write(</table>);

Try this level Hard complexity high

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