Delete element from indexed array based on value

Question

How to delete element from indexed array based on value

Example:

var add = { number1: 'hello' , number2: "Haii", number3: "Byee" };

Now I want to delete element which having value Haii.

Can we do it with out iterate using for loop.

Answer 1

var add = {
 number1: 'hello',
 number2: "Haii",
 number3: "Byee"
};
for (var x in add) {
 if (add[x] == "Haii") {
 add[x].remove();
 }
}

Answer 2

Can we do it with out iterate using fir loop.

1. First, get all the keys which correspond to the value Haii.

   var filteredKeys = Object.keys(add).filter(function(currentKey) {
    return add[currentKey] === "Haii";
   });
   

2. Then, delete all those keys from add

   filteredKeys.forEach(function(currentKey) {
    delete add[currentKey];
   });
   

No explicit looping at all :-)

We can reduce the above seen two step process into a one step process, like this

Object.keys(add).forEach(function(currentKey) {
 if (add[currentKey] === "Haii") {
 delete add[currentKey];
 }
});

Again, no explicit looping :-)

Answer 3

var add = {
 number1: 'hello',
 number2: "Haii",
 number3: "Byee"
};
for (var i in add) {
 if (add[i] == "Haii") {
 delete add[i];
 }
}

try this: