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2. How do I check if a variable is an array in JavaScript?

   stackoverflow.com/questions/767486

   All arrays are objects, so checking the constructor property is a fast process for JavaScript engines. If you are having issues with finding out if an objects property is an array, you must first check if the property is there. variable.prop && variable.prop.constructor === Array.

3. How to sort strings in JavaScript - Stack Overflow

   stackoverflow.com/questions/51165

   Use String.prototype.localeCompare as per your example: list.sort(function (a, b) { return ('' + a.attr).localeCompare(b.attr); }) We force a.attr to be a string to avoid exceptions. localeCompare has been supported since Internet Explorer 6 and Firefox 1. You may also see the following code used that doesn't respect a locale:

4. JavaScript array element to string - Stack Overflow

   stackoverflow.com/questions/1353579

   8. i have a simple array and i want to generate string which include all the elements of the array, for example: The array is set as follow: array[0] = uri0. array[1] = uri1. array[2] = uri2. And the output string must be. teststring = uri0,uri1,uri2. I've tried to make this following way (using for loop):

5. How to find if an array contains a specific string in...

   stackoverflow.com/questions/6116474

   This answer has been awarded bounties worth 500 reputation by Community. You really don't need jQuery for this. var myarr = ["I", "like", "turtles"]; var arraycontainsturtles = (myarr.indexOf("turtles") > -1); Hint: indexOf returns a number, representing the position where the specified searchvalue occurs for the first time, or -1 if it never ...

6. How to convert array into comma separated string in javascript

   stackoverflow.com/questions/39771131

   Array.prototype.join() The join() method joins all elements of an array into a string. Arguments: It accepts a separator as argument, but the default is already a comma , str = arr.join([separator = ',']) Examples:

7. javascript - Convert array to JSON - Stack Overflow

   stackoverflow.com/questions/2295496

   Happily, you can create a list of items, which works pretty much as an array and then use Object.assign as if it was an array, then convert the output to a JSON object var items = {}; items["some_key"]="some value"; items["other_key"]="some other value"; const jsonString = JSON.stringify(Object.assign({}, items)) const json_obj = JSON.parse ...

8. Get all unique values in a JavaScript array (remove duplicates)

   stackoverflow.com/questions/1960473/get-all-unique-values-in-a-javascript...

   With JavaScript 1.6 / ECMAScript 5 you can use the native filter method of an Array in the following way to get an array with unique values: return array.indexOf(value) === index; The native method filter will loop through the array and leave only those entries that pass the given callback function onlyUnique.

9. Loop through an array in JavaScript - Stack Overflow

   stackoverflow.com/questions/3010840

   filter returns an array of items that satisfy some condition or test. every returns true if every array member passes the test. some returns true if any pass the test. forEach runs a function on each array member and doesn't return anything. map is like forEach, but it returns an array of the results of the operation for each element.

10. What is the way of declaring an array in JavaScript?

    stackoverflow.com/questions/11403068

    The 2nd example makes an array of size 3 (with all elements undefined). The 3rd and 4th examples are the same, they both make arrays with those elements. Be careful when using new Array(). var x = new Array(10); // array of size 10, all elements undefined var y = new Array(10, 5); // array of size 2: [10, 5] The preferred way is using the ...

11. Check if a string contains any element of an array in JavaScript

    stackoverflow.com/questions/37428338

    The some() method tests whether some element in the array passes the test implemented by the provided function. from Array.prototype.some() docs on MDM. The includes() method determines whether one string may be found within another string, returning true or false as appropriate. from String.prototype.includes() docs on MDM