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iterations.js
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iterations.js
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// Iterations / loops
// Example 1
for (let i = 1; i < 4; i++) {
console.log(`Lifting weights rep ${i} 🏋️`);
}
// Example 2
const personArray = [
'John',
'Read',
2022-1990,
'programmer',
['Michael', 'John', 'Steven'],
true
]
let typeArray = []
for (let i = 0; i < personArray.length; i++) {
console.log(personArray[i], typeof personArray[i]);
// typeArray[i]=typeof personArray[i]; //1st example
typeArray.push(typeof personArray[i]); // 2nd example (preferable)
}
console.log(typeArray);
console.log('--------------------------------');
// Example 3
const birthYears = [1970, 2001, 1968, 2004];
const age=[];
for (let i = 0; i < birthYears.length ;i++){
age.push(new Date().getFullYear() - birthYears[i]);
}
console.log(age);
console.log('--------------------------------');
// Example 4 - Continue and break down
for (let i = 0; i < typeArray.length; i++){
if (typeArray[i]==="string"){
continue;
}
console.log(typeArray[i]);
}
console.log('--------------------------------');
for (let i=0 ; i < personArray.length ; i++){
if (typeof personArray[i]==='number'){
break;
}
console.log(personArray[i], typeof personArray[i]);
}