javascript中怎么去掉回车符

function iGetInnerText(testStr) {

        var resultStr = testStr.replace(/\ +/g, ""); //去掉空格

        resultStr = testStr.replace(/[ ]/g, "");    //去掉空格

        resultStr = testStr.replace(/[\r\n]/g, ""); //去掉回车换行

        return resultStr;

    }

var testStr="sssss

vvvvv";

var result=iGetInnerText(testStr);