function setIframeHeight(id){
try{
var iframe = document.getElementById(id);
if(iframe.attachEvent){
iframe.attachEvent("onload", function(){
iframe.height = iframe.contentWindow.document.documentElement.scrollHeight;
});
return;
}else{
iframe.onload = function(){
iframe.height = iframe.contentDocument.body.scrollHeight;
};
return; 
} 
}catch(e){
throw new Error('setIframeHeight Error');
}
}

  

 

涉及了一些兼容问题:

IE用attachEvent | 3C用onload来判断子页面是否加载完成。

IE用contentWindow | 3C用contentDocument来获取子页面

IE用document.documentElement.scrollHeight(兼容ie6 ie7)| 3C用body.scrollHeight获取页面高度

 

 

子级页面给父级页面元素设置高度

function setParentIframeHeight(id){
    try{
        var parentIframe = parent.document.getElementById(id);
         if(window.attachEvent){
            window.attachEvent("onload", function(){
                parentIframe.height = document.documentElement.scrollHeight;
            });
            return;
        }else{
            window.onload = function(){
                parentIframe.height = document.body.scrollHeight;
            };
            return;                 
        }     
    }catch(e){
        throw new Error('setParentIframeHeight Error');
    }
}

  

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