javascript chcek if array contains code example
Example 1: 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");
}
Example 2: javascript array contains object
// Works in all browsers
if (array.index(object) !== -1) {
console.log(`my object is in my array`)
}
// ES7 :
if(array.includes(oject)) {
console.log(`my object is in my array`)
}