CODEWITHSUNDEEP
jqueryajaxfunctionpostvar
m1k1o
m1k1o

Reputation: 2364

jQuery global variabiles $.post();

$.post("general.php", {/* some values */}, function(data){var id = data;});
alert(id);

The problem is that, alert is empty. Do know anyone why? And how to fix it? Thanks.

Upvotes: 0

Views: 67

Answers (1)

gion_13
gion_13

Reputation: 41533

There are 2 problems :

  • one is that the ajax is asynchronous and the alert executes before the ajax callback, where the id variable is being set

  • the second one is that the variable is not global, it is only visible in the callback scope

So, I suggest you declare the variable global (if you need it for later use) : 

var id;// in the global scope

or 

window.id = '';

And you should probably execute the logic in the callback : 

$.post("general.php", {/* some values */}, function(data){ 
    window.id = data;
    alert(data);
});

Upvotes: 6

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