javascript check if is array
var colors=["red","green","blue"];
if(Array.isArray(colors)){
//colors is an array
}
javascript check if is array
var colors=["red","green","blue"];
if(Array.isArray(colors)){
//colors is an array
}
how to check if something is array javascript
function isArray(value) {
return Object.prototype.toString.call(value) === "[object Array]";
}
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");
}
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