Stop execute previous javascript in iframe

Question

If I click on button javascript will be append to iframe.

example:

<button id="run">Click me!</button>
<textarea></textarea>

var iframe = here_is_iframe_object;

$('#run").click(function(e) {
    $(iframe).find("script[id=myScript]").remove();
    $(iframe).append("<script id='myScript'>"+ $("textarea").val() +"</script>");
});

If I put into the textarea setInterval with alert for example and after that put simple alert, it will be execute setInterval with alert and new alert at the same time.

setInterval(function() {
    alert(true);
}, 5000);

How to stop previous javascript and execute only new code?

Thanks in advance.

Somehow this problem seems a bit backwards to me. Is the content of the iframe on the same domain as the rest and under your control? — polarblau
– polarblau, Commented Jul 19, 2014 at 10:17

Community · Accepted Answer · 2017-05-23 12:13:41Z

0

I think we do need a little more info about your code (ie context). For what I understood, this snippet works as expected (when typos are corrected) But be carefull, I'm no specialist but I think that you're in the case eval() can be dangerous : Look at this answer about using eval().

To stop a setInterval() timer, use clearInterval() (https://developer.mozilla.org/en-US/docs/Web/API/Window.clearInterval)

edited May 23, 2017 at 12:13

CommunityBot

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answered Jul 19, 2014 at 12:53

Kaiido

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