jQuery的检查，如果数组包含重复的字符串 [英] Jquery check if array contains duplicate string

问题描述

如何检查数组包含重复的字符串，我有validateArray = ['山'，'玉''山']我已经使用
下面的函数从左右，但同样不是为我工作。

  checkDuplicate =功能（reportRecipients）{
    如果（reportRecipients.length→1）{
        。VAR recipientsArray = reportRecipients.toString（）分（''）;
        对于（一个在recipientsArray）{
            如果（reportRecipients.indexOf（一）！= reportRecipients.lastIndexOf（一））{
                返回true;
                打破;
            }
        }
    }
    返回false;
}
 

解决方案

这是为我工作：

  VAR reportRecipients = ['AAA'，'某某'，'AAA'，'ABC'，'XXX'，'某某'，'PQR'];
变种recipientsArray = reportRecipients.sort（）;变种reportRecipientsDuplicate = [];
对于（VAR I = 0; I＆LT; recipientsArray.length  -  1;我++）{
    如果（recipientsArray第[i + 1] == recipientsArray [I]）{
        reportRecipientsDuplicate.push（recipientsArray [I]）;
    }
}
 

希望有所帮助。

How to check if array contains a duplicate string , i have validateArray = ['sa','sa','yu'] i have used the following function from SO but same not working for me.

checkDuplicate = function (reportRecipients) {
    if (reportRecipients.length > 1) {
        var recipientsArray = reportRecipients.toString().split(',');
        for (a in recipientsArray) {
            if(reportRecipients.indexOf(a) != reportRecipients.lastIndexOf(a)){
                return true;
                break;
            }
        }
    }
    return false;
}

解决方案

This is working for me:

var reportRecipients = ['AAA', 'XYZ', 'AAA', 'ABC', 'XXX', 'XYZ', 'PQR'];
var recipientsArray = reportRecipients.sort(); 

var reportRecipientsDuplicate = [];
for (var i = 0; i < recipientsArray.length - 1; i++) {
    if (recipientsArray[i + 1] == recipientsArray[i]) {
        reportRecipientsDuplicate.push(recipientsArray[i]);
    }
}

Hope that helps.

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