javascript array includes object id code example
Example 1: how to delete an element of an array in javascript
let animals1 = ["dog", "cat", "mouse"]
delete animals1[1]
console.log(animals1)
let animals2 = ["dog", "cat", "mouse"]
animals2.splice(1, 1)
console.log(animals2)
let animals3 = ["dog", "cat", "mouse"]
animals3.splice(0, 2)
console.log(animals3)
Example 2: angular list contains property
vendors.filter(function(vendor){ return vendor.Name === "Magenic" })
Example 3: javascript array contains object
if (array.index(object) !== -1) {
console.log(`my object is in my array`)
}
if(array.includes(oject)) {
console.log(`my object is in my array`)
}
Example 4: check unique object in array javascript site:stackoverflow.com
var data = [
{name:"Joe", date:'2018-07-01', amt:250 },
{name:"Mars", date:'2018-07-01', amt:250 },
{name:"Joe", date:'2018-07-02', amt:250 },
{name:"Saturn", date:'2018-07-01', amt:250 },
{name:"Joe", date:'2018-07-02', amt:250 },
{name:"Jupiter", date:'2018-07-01', amt:250 },
]
var resArr = [];
data.filter(function(item){
var i = resArr.findIndex(x => (x.name == item.name && x.date == item.date && x.amt == item.amt));
if(i <= -1){
resArr.push(item);
}
return null;
});
console.log(resArr)