Web Front-endHTML TutorialWhat is the difference between iframe and frame? Summary of the differences between iframe and frameWhat is the difference between iframe and frame? Summary of the differences between iframe and frame
This article brings you what is the difference between iframe and frame? The summary of the difference between iframe and frame has certain reference value. Friends in need can refer to it. I hope it will be helpful to you. [Recommended reading: Html5 tutorial]
What are the shortcomings of iframe?
iframe will block the Onload event of the main page
The search engine's search program cannot interpret this kind of page, which is not conducive to SEO
iframe and the main page share the connection pool , and the browser has restrictions on connections of the same domain, so it will affect the parallel loading of the page
You need to consider these two shortcomings before using iframe. If you need to use an iframe, it is best to dynamically add the src attribute value to the iframe through javascript, which can avoid the above two problems
The difference between iframe and frame
frame It cannot be used alone without frameSet, iframe can;
frame cannot be placed in the body;
The following code can be displayed normally
<!--<body>--> <frameset rows="50%,*"> <frame name="frame" src="test.html"/> </frameset> <!--<body>-->
The following code cannot be displayed normally
<body> <frameset rows="50%,*"> <frame name="frame" src="test.html"/> </frameset> <body>
The iframe nested in the frameSet must be placed in the body;
<body> <frameset> <iframe name="frame" src="test.html"/> </frameset> </body>
The following cannot be displayed normally:
<!--<body>--> <frameset> <iframe name="frame1" src="test.html"/> </frameset> <!--</body>-->
Iframes that are not nested in the frameSet can be used freely;
<body> <iframe name="frame" src="test.html"/> </body> <!--<body>--> <iframe name="frame" src="test.html"/> s <!--</body>-->
The height of the frame can only be controlled through frameSet; iframe can be controlled by itself, not through frameSet
If more than two iframes are used on the same page, they can be displayed normally in IE. Only the first one can be displayed in Firefox; using two or more frames will work fine in both IE and Firefox.
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