《Javascript深入浅出》课程：判断两个数组是否相似
function arraysSimilar(arr1, arr2){ var objtoString = Object.prototype.toString; if(objtoString.call(arr1)=='[object Array]' && objtoString.call(arr2)=='[object Array]'){ if(arr1.length==arr2.length){ var arr_type1 = [], arr_type2 = []; function m_arr_type(a1,a2){ for(var i=0;i<a1.length;i++){ var obj = objtoString.call(a1[i]); a2[i] = (obj=='[object String]' && 1)||(obj=='[object Bloolean]' && 2)||(obj=='[object Number]' && 3)||(a1[i]+''=='undefined' && 4)||(a1[i]+''=='null' && 5)||(obj=='[object Function]' && 6)||(obj=='[object Date]' && 7)||(obj=='[object global]' && 8)||(a1[i]==window && 8)||(obj=='[object Object]' && 9); } return a2.sort(); } var arr_jg1 = m_arr_type(arr1,arr_type1).toString(), arr_jg2 = m_arr_type(arr2,arr_type2).toString(); if(arr_jg1 !== arr_jg2){ return false; } return true; }else{ return false; } }else{ return false; }}