How to make iframe adaptive to front-end height in jquery

This time I will bring you jqueryHow to make iframe adapt to the height of the front end, jquery makes the iframe adapt to the height of the front end. take a look. iframe code, pay attention to write ID

<iframe src="test.html" id="main" 
width
="700" 
height
="300" frameborder="0" scrolling="auto"></iframe>

jquery code one:

//注意：下面的代码是放在test.html调用 
$(window.parent.
document
).find("#main").load(function(){ 
var main = $(window.parent.document).find("#main"); 
var thisheight = $(document).height()+30; 
main.height(thisheight); 
});

jquery code two:

//注意：下面的代码是放在和iframe同一个页面调用 
$("#main").load(function(){ 
var mainheight = $(this).contents().find("body").height()+30; 
$(this).height(mainheight); 
});

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