js中判断数组中是否含有某个字符串方法答:if (self[i] === value) { return true } else { return false } } }}[1,2,3,4,65,67,89,4].includes(67)// true[1,2,3,4,65,67,89,4].includes(88)// false
js中一个二维数组怎么判断某一固定列中是否存在某值,要最优算法?_百度...答:var array = [["122928002", "201048003,50025899"], ["122928002", ",50023172"], ["122928004", ",50023172"]];var newarray = array.filter((e,i,a)=>{ var i1=a.findIndex(e1=>e1[0]==e[0]);if(i1