comparing 2 strings alphabetically for sorting purposes

Question

I m trying to compare 2 strings alphabetically for sorting purposes  For example I want to have a boolean check like if  aaaa   lt   ab    I tried it  but it s not giving me correct results  so I guess that s not the right syntax  How do I do this in jquery or Javascript

User · Answer

Lets say that we have an array of objects:

{ name : String }

then we can sort our array as follows:

array.sort(function(a, b) {
    var orderBool = a.name > b.name;
    return orderBool ? 1 : -1;
});

Note: Be careful for upper letters, you may need to cast your string to lower case due to your purpose.

User · Answer

Just remember that string comparison like  x     X  is case-sensitive   aa   lt   ab    true  aa   lt   Ab    false   You can use  toLowerCase   to compare without case sensitivity

User · Answer

You do say that the comparison is for sorting purposes  Then I suggest instead    a  localeCompare  b      It returns -1 since  a   lt   b   1 or 0 otherwise  like you need for Array prototype sort    Keep in mind that sorting is locale dependent  E g  in German     is a variant of a  so      localeCompare  b    de-DE   returns -1  In Swedish     is one of the last letters in the alphabet  so      localeCompare  b    se-SE   returns 1   Without the second parameter to localeCompare  the browser s locale is used  Which in my experience is never what I want  because then it ll sort differently than the server  which has a fixed locale for all users

User · Answer

a  localeCompare  b   should actually return -1 since a sorts before b  http   www w3schools com jsref jsref localecompare asp

User · Answer

Lets look at some test cases - try running the following expressions in your JS console    a   lt   b    aa   lt   ab    aaa   lt   aab    All return true   JavaScript compares strings character by character and  a  comes before  b  in the alphabet - hence less than    In your case it works like so -      1    a aaa   lt    a b    compares the first two  a  characters - all equal  lets move to the next character      2     a a  aa   lt   a b        compares the second characters  a  against  b  - whoop   a  comes before  b   Returns true

[javascript] comparing 2 strings alphabetically for sorting purposes

Examples related to javascript

Examples related to jquery