Example of javascript firefox automatically loading iframe and automatically adjusting height and width-JS Tutorial-php.cn

Example of javascript firefox automatically loading iframe and automatically adjusting height and width

高洛峰

Release： 2017-01-12 11:19:44

Original

1742 people have browsed it

iframe automatically obtains onload height and width

function AutoResize(iframe) 
{ 
//firefox 
if(iframe.contentWindow) 
{ 
iframe.height = iframe.contentWindow.document.documentElement.scrollHeight; 
iframe.width = iframe.contentWindow.document.documentElement.scrollWidth; 

} 
//IE 
else if(iframe.contentDocument) { 

iframe.height = iframe.contentDocument.width; 
iframe.width = iframe.contentDocument.height; 
} 
}

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iframe automatically loads:

var tdObj = document.getElementById(&#39;ifrtd&#39;); 
tdObj.innerHTML = &#39; QQ动态加载中 ... &#39;; 

var iframe = document.createElement("iframe"); 
iframe.src = &#39;http://www.zbphp.com/&#39;; 

if (iframe.attachEvent){ 

//iframe.attachEvent("onload",AutoResize.call(iframe)); #报错 
iframe.attachEvent("onload", function(){ 
AutoResize(iframe); 
}); 
} else { 

//iframe.onload = AutoResize.call(iframe);#报错不支持 
iframe.onload = function(){ 
AutoResize(iframe); 
}; 
} 

tdObj.innerHTML = &#39;&#39;; 
tdObj.appendChild(iframe);

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In fact, the iframe.onload here wants to be written as iframe.onload = AutoResize.call(iframe); Unfortunately, an error is reported ,not support.

I have never known how to make function calls in javascript. For example, when iframe.onload = function(){} calls a function and has parameters, you can only write it like this instead of passing parameters directly like other programs.

I have seen apply() call() before, but it is not supported after I tried it. Why?

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