JavaScript checks the type of object

From , 5 Years ago, written in JavaScript, viewed 130 times.

function is(type, obj) {
    var clas = Object.prototype.toString.call(obj).slice(8, -1);
    return obj !== undefined && obj !== null && clas === type;
}
 
is('String', 'test'); // true
is('String', new String('test')); // true
//javascript/4801

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JavaScript checks the type of object

Reply to "JavaScript checks the type of object"