javascript array contains
var colors = ["red", "blue", "green"];
var hasRed = colors.includes("red"); //true
var hasYellow = colors.includes("yellow"); //falsejavascript array contains
var colors = ["red", "blue", "green"];
var hasRed = colors.includes("red"); //true
var hasYellow = colors.includes("yellow"); //falsehow to check if item is in list js
var myList=["a", "b", "c"];
mylist.includes("d")//returns true or falsejs test if array
if(Array.isArray(myVarToTest)) {
// myVatToTest is an array
} else {
// myVarToTest is not an array
}javascript array contains
var fruits = ["Banana", "Orange", "Apple", "Mango"];
var n = fruits.includes("Mango");js check if array contains value
return arrValues.indexOf('Sam') > -1javascript 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");
}Copyright © 2021 Codeinu
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