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Interesting script tags come from scripts using the getAttribute method_javascript skills
Interesting script tags come from scripts using the getAttribute method_javascript skills
Introducing external objects and passing parameters into the web page, I think everyone has this experience. Generally speaking, the tags used are iframe and embed (for flash), but these two tags cannot set parameters like xml. The value can only be passed by appending the query string after the url address. htc is pretty good, but it doesn’t have browser compatibility, so I guess people won’t consider it anymore.
Use the script tag to load an external js file into the page, and it is equally valid regardless of whether the file is in the same domain. This cross-domain feature can be said to be unique. Under normal circumstances, we just use js files as part of the public code and integrate some public functions and classes into it. To change our thinking, we think of the script tag as a large visual component, passing in parameters to it, and making different layout adjustments based on the parameters. This is very interesting.
For example, "", this way of writing Isn’t it intuitive and practical? You may ask, how does player.js get the parameters in the script tag? In fact, this is very simple. You only need to find the last script element in player.js, which is the current element, and then use the getAttribute method to take as many parameters as you want.
]
The script tag contains code in addition to Besides, have you ever thought about using it to store data? The purpose of this is mainly to achieve cross-domain restrictions.
You can use strings to store text, but this method is unintuitive and requires special characters to be processed, such as:
str="aaaa"
str ="bbbb"
Or
str="aaaa
bbbb"
There is an application, let me share it with everyone
Due to the XP patch, all the flash on websites from all over the country were added with virtual frames overnight, requiring a click to activate. When everyone was so angry that they had toothache, they had to come up with corresponding methods. Here is the method of inserting flash into Sina:
----------------------- ----------------------------------
<script> <br>var objFlash = new sinaFlash("abc.swf", "", "100", "100", "7", "", false,"high"); <br>objFlash.addParam("wmode", "opaque"); <br>objFlash.write("flashcontent_1D194BAF55E2"); <br>< ;/script> <br>------------------------------------------------- ---------- <br>If you make good use of script tags, it can be simplified to: <br>----------------------- ---------------------------------- <br><script src="swf.js" movie="abc.swf" width="100" height="100" wmode="opaque"></script>
------------------------- ----------------------------
One sentence is enough
The following is the content of the swf.js file:
-------------------------------------------------- ---
var ol,oJs,flaID,sMovie
ol=document.getElementsByTagName("script")
oJs=ol[ol.length-1]
flaID=oJs.getAttribute(" flaID")||""
sMovie=oJs.getAttribute("movie")
if(sMovie.slice(0,1)=="{"&&sMovie.slice(-1)=="}" )
sMovie=eval(sMovie.slice(1,-1))
l=""
document.write(l)
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