var strVariable = "This is a string."; var isStr = _.isString(strVariable); console.log(isStr); // Output: true
var stringArray = ["string1", "string2", "string3"]; var mixedArray = ["string1", 1, "string3"]; var isStringArray = _.every(stringArray, _.isString); var isMixedArray = _.every(mixedArray, _.isString); console.log(isStringArray); // Output: true console.log(isMixedArray); // Output: false
var array = ["string1", 1, "string3", 2, "string5"]; var filteredArray = _.filter(array, _.isString); console.log(filteredArray); // Output: ["string1", "string3", "string5"]Overall, the isString function is part of the Underscore library, which is a utility library in JavaScript that provides various functions for working with arrays, objects, and functions.