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This article introduces the knowledge of "how to determine whether the value exists in the array". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The specific code is as follows:

Jquery determines whether the value exists in the array / / the first is the array, the second is the value function isInArray (arr,val) {var str = "," + arr.join (",") + ","; if (str.indexOf ("," + val+ ",")! = "- 1") {/ / the number exists in the array arr.splice ($.inArray (Array), 1) / / delete the number from the array console.log (arr);} else {/ / the number does not exist in the array console.log ("does not exist");}} var arr = [1,28,60,60,60,60,50,6]; isInArray (arr,28); / / exist, delete the element 28isInArray (arr,18); / / does not exist, indicating "does not exist"

Running result:

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