check if a value is an array javascript code example
Example 1: get if there is a value in an array node js
myArray = Array();
if(myArray.includes(valueWeSearch))
{
}
Example 2: javascript check if is array
var colors=["red","green","blue"];
if(Array.isArray(colors)){
}
Example 3: javascript typeof array
Array.isArray(arr)
Example 4: js check if is array
if(Array.isArray(colors)){
}
Example 5: 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");
}