Make JQuery AJAX Run returned Script

Question

I have a link, which I want to make a DELETE request with JQuery with AJAX.

if(confirm("Are you sure?")) {
   $.ajax({
    url: $(this).attr("href"),
    type: 'DELETE',
    success: function(result) {
            // Do something with the result
        }
    });
}

result is a wad of Javascript I would like to run. How do I get it to run my returned script?

Please don't do that. Don't return Javascript code, don't eval, just return some kind of identifier and let your Javascript decide what to do. — kapa
– kapa, Commented Jun 10, 2011 at 16:10
@bazmegakapa Are you saying this for a separation of concerns purpose or is there a technical reason why this is a bad idea? — Drew
– Drew, Commented Jun 10, 2011 at 16:12
eval should be avoided whenever possible. I don't think there is a real reason for returning a piece of code. You could return some kind of JSON, and define in your Javascript what should happen to it. — kapa
– kapa, Commented Jun 10, 2011 at 16:14
Mainly security reasons. a Hacker may be able to inject malicious code into your site. — Jan
– Jan, Commented Jun 10, 2011 at 16:15

65Fbef05 · Accepted Answer · 2011-06-10 16:09:17Z

14

success: function(result) {
    eval(result);
}

answered Jun 10, 2011 at 16:09

65Fbef05

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2 Comments

65Fbef05 Over a year ago

Don't feel dumb - it's easy to forget built in functions if you don't use them often.

Teun Kooijman Over a year ago

Are there any risks attached to using eval() in this use case?

natedavisolds · Accepted Answer · 2011-06-10 16:11:57Z

5

Use the dataType: 'script' option

$.ajax({
    url: $(this).attr("href"),
    type: 'DELETE',
    dataType: 'script'
});

Or simply,

$.getScript($(this).attr("href")); // Won't use 'DELETE' http type

answered Jun 10, 2011 at 16:11

natedavisolds

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1 Comment

Drew Over a year ago

Nice. This fits better with the rest of my Javascript. :)

Chris · Accepted Answer · 2011-06-10 16:11:14Z

2

Check the javascript Eval method. It allows you to execute js code which is represented as a string.

answered Jun 10, 2011 at 16:11

Chris

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