The problem of mixing setInterval, setTimeout and jquery_jquery

Method 1. Calling other methods directly in ready will prompt a missing object error. Applying the jQuery extension can solve this problem.

Copy code The code is as follows:

$(document).ready(function(){

$.extend({
show:function(){
alert("ready");
}
});
setInterval("$.show()", 3000);
});

Method 2. Do not use quotation marks and parentheses when specifying a function to be executed regularly.

Copy code The code is as follows:

function show(){
alert("ready ");
}
setInterval(show ,3000);// Note that the function name does not have quotes or brackets!