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For each javascript get index

Code examples

52
0

javascript foreach 

var colors = ['red', 'blue', 'green'];

colors.forEach(function(color) {
  console.log(color);
});
12
0

javascript foreach index 

users.forEach((user, index)=>{
	console.log(index); // Prints the index at which the loop is currently at
});
2
0

js get index from foreach 

var myArray = [123, 15, 187, 32];

myArray.forEach(function (value, i) {
    console.log('%d: %s', i, value);
});

// Outputs:
// 0: 123
// 1: 15
// 2: 187
// 3: 32
1
0

javascript enumerate with index 

const iterable = [...];
for (const [index, elem] in iterable.entries()) {
  f(index, elem);
}

// or
iterable.forEach((elem, index) => {
  f(index, elem);
});

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