js check value is in array code example
Example 1: get if there is a value in an array node js
myArray = Array(/*element1, element2, etc...*/);
// If the array 'myArray' contains the element 'valueWeSearch'
if(myArray.includes(valueWeSearch))
{
// Do something
}
Example 2: javascript check if in array
var extensions = ["image/jpeg","image/png","image/gif"];
if(extensions.indexOf("myfiletype") === -1){
alert("Image must be .png, .jpg or .gif");
}