[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fhnhOJgTE-bmH0AN23At43Rcw63SZ8svVt9_s3AUtSCc":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2026-05-26 23:13:37",305818545,[8,9,10,11],"5","2","4","3",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},20,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","dc072dde55b04fa2862cc8e26dbf0094","37-数组","分析下面的JavaScript代码段,输出的结果是( ). emp=new Array(4); emp[1]=1; emp[4]=2; document.write(emp.length)",[21,32,42,50,59,67,76,85,88,97],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],305818538,[25,26,27,28],"var arry1=new Array()","var arry1=new Array(3)","var arry1[]=new Array(3)(4)","var arry1=new Array('3','4')","下列声明数组的语句中,错误的选项是","v1",0,{"answer":33,"createTime":34,"id":35,"options":36,"question":41,"source":30,"type":31},[],"2026-05-11 21:20:34",305818539,[37,38,39,40],"for","if","for…in","for…of","下列语句不能用于遍历数组的是",{"answer":43,"createTime":5,"id":44,"options":45,"question":49,"source":30,"type":31},[],305818540,[46,47,9,48],"1","以上都不对","0","数组的索引值是从下面哪一项开始的",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],305818541,[54,55,56,57],"数组","布尔","字符串","数值","javascript的基本数据类型不包括",{"answer":60,"createTime":5,"id":61,"options":62,"question":66,"source":30,"type":31},[],305818542,[63,64,9,65],"9","8","10","代码: var arr = new Array(9); arr[0]=1; arr[2]=2; 该数组的length属性值为( )",{"answer":68,"createTime":69,"id":70,"options":71,"question":75,"source":30,"type":31},[],"2026-01-07 15:40:06",305818543,[72,73,74,47],"["bmw", "qq", "byd", "polo", "glof"]","["bmw", "qq", "polo", "glof"]","["bmw", "qq", "polo", "byd", "glof"]","下面代码的打印结果是( ) var cars = ['bmw','qq','byd','glof']; cars.splice(2, 0, 'polo'); console.log(cars)",{"answer":77,"createTime":5,"id":78,"options":79,"question":84,"source":30,"type":31},[],305818544,[80,81,82,83],"length( )","join( )","add( )","sort( )","下列哪个方法是对数组元素进行排序的( )",{"answer":86,"createTime":5,"id":6,"options":87,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":89,"createTime":5,"id":90,"options":91,"question":96,"source":30,"type":31},[],305818546,[92,93,94,95],"var colors = "red", "green", "blue"","var colors = {"red", "green", "blue"}","var colors =[ "red", "green", "blue"]","var colors =( "red", "green", "blue")","如何在JavaScript中创建一个数组?( )",{"answer":98,"createTime":5,"id":99,"options":100,"question":105,"source":30,"type":31},[],305818547,[101,102,103,104],"join()","concat()","push()","splice()","JavaScript中,以下( )方法用于将数组元素连接成一个字符串"]