I want to create a dictionary in JavaScript by checking for the objects property.
var item = {};
if(item.hasOwnProperty("xyz")){
//do wat is required
}else{
//add the key property to the item object
}
How to add this "xyz" key property to the object is my question.
Thanks
You just need to use item.xyz='Whatever' and xyz will be added to item
var item = {};
if (item.hasOwnProperty('xyz')) {
console.log('item has xyz');
} else {
item.xyz = 'something';
//item["xyz"] = 'something'; You can also use this
}
console.log(item);
item.xyz equals to 0 or false or null, in these cases item.xyz exists, but it will be treated like when that is not existsif you need to assign that, there is no need to any check:
item["xyz"] = "something";
if xyz exists on item, it will be assigned else it will be created
Just do item.xyz and assign whatever you want to that.
item.xyz = 'abc';
Then you can just check for item.xyz
var item = {};
if(item.hasOwnProperty("xyz")) {
alert('Item has already that property');
} else {
item.xyz= value;
}
item.xyz equals to 0 or false or null, in these cases item.xyz exists, but it will be treated like when that is not exists