GetCookie undefined problems encountered when using AJAX to make a message

The original function is as follows:

function GetCookie (key) {var arr1 = Document.cookie.split (';'); for (var i = 0;i<arr1.length;i++) {var arr2 = arr1[i].split (' = '), if (arr2[0] = = key) {return arr2[1];}}}

When using split () for arr1, use '; ' to split the error; Use function to get a undefined; Workaround: You must add a space, use '; ' Split

var arr1 = Document.cookie.split ('; ‘);

　　

To record the GetCookie function, use regular expressions:

function GetCookie (name) {     var arr,reg=new RegExp ("(^|)" +name+ "= ([^;] *)(;|$)");     if (Arr=document.cookie.match (reg))         return unescape (arr[2]);     Else         

　　

GetCookie undefined problems encountered when using AJAX to make a message