derek5. 2008-10-25 22:14 采纳率: 100%
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如何检查一个数组是否包含 JavaScript 中的对象?

What is the most concise and efficient way to find out if a JavaScript array contains an object?

This is the only way I know to do it:

function contains(a, obj) {
    for (var i = 0; i < a.length; i++) {
        if (a[i] === obj) {
            return true;
        }
    }
    return false;
}

Is there a better and more concise way to accomplish this?

This is very closely related to Stack Overflow question Best way to find an item in a JavaScript Array? which addresses finding objects in an array using indexOf.

转载于:https://stackoverflow.com/questions/237104/how-do-i-check-if-an-array-includes-an-object-in-javascript

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