Details after setting the iframe's src to about:blank
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After setting the iframe's src to 'about:blank', the memory will not be released if it is not set to "about:blank". You must also use iframe.document.write(''); This is the only way to clear the content, but after this processing there will still be about 500-1000K of memory remaining. This is the iframe bug of IE6. Dynamically created iframes will always consume some memory. Copy code The code is as follows:function clearIframe(id){ var el = document.getElementById(id), iframe = el.contentWindow; if(el){ el.src = 'about:blank'; try{ iframe.document.write(''); iframe.document.clear(); }catch(e){}; //The above can clear most of the memory and document node records. //Finally, delete this iframe. document.body.removeChild(el); } } clearIframe('iframe_id'); |
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