How do I check if an array includes a value in JavaScript?
What is the most concise and efficient way to find out if a JavaScript array contains a value? This is the only way I know to do it: function contains(a, obj) { for (var i = 0; i < a.length;...
How to determine if a JavaScript array contains an object with an ...
When you wrote this answer, the title was “How to determine if Javascript array contains an object with an attribute that equals a given value?”. You’re checking if an object has a property on its …
Check if an array contains any element of another array in JavaScript
May 1, 2013 · Array .filter() with a nested call to .find() will return all elements in the first array that are members of the second array. Check the length of the returned array to determine if any of …
Javascript: Using `.includes` to find if an array of objects contains a ...
Mar 9, 2018 · Javascript: Using `.includes` to find if an array of objects contains a specific object Asked 7 years, 9 months ago Modified 2 years, 10 months ago Viewed 41k times
How to find if an array contains a specific string in …
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Determine whether an array contains a value - Stack Overflow
Jul 25, 2009 · $.inArray(value, array) Returns index of value in array. Returns -1 if array does not contain value. See also How do I check if an array includes an object in JavaScript?
Check if a string contains any element of an array in JavaScript
May 25, 2016 · 71 How can I check if a string contains any element of an array? I want to filter some array if the element has some string. Please see below code.
Check if an element is present in an array - Stack Overflow
811 This question already has answers here: How do I check if an array includes a value in JavaScript? (64 answers)
Check whether a value exists in JSON object - Stack Overflow
6 Why not JSON.stringify and .includes()? You can easily check if a JSON object includes a value by turning it into a string and checking the string.
javascript - Check if array contains all elements of another array ...
Dec 4, 2018 · 173 I want a function that returns true if and only if a given array includes all the elements of a given "target" array. As follows.