javascript - Find value or check if value exists in object

Question

i have a object like:

["1", "2", "1", "2"]

No i want to check if "1" exists in object. I don't need to know how often it exists.

$.inArray(1, myObject) -> Returns always -1

So what is wrong or what i have to do?

Answer 1

当数组仅包含字符串时，您正在检查整数。还要注意 jQuery 的inArray()函数不像它的 PHP 对应函数那样工作。如果找到（作为整数），或者如果它不在数组中，它会返回值的实际从零开始的索引，而不是返回trueor 。false-1

尝试这个：

if($.inArray('1', myObject) >= 0) 
{
    // Do your stuff.
}

这是一个jsFiddle 演示

Answer 2

或者你可以使用普通的 JS：

var x = ["1", "2", "1", "2"];

if (x.indexOf("1") !== -1) {
    console.log("found");
} else {
    console.log("not found");
}