標籤：html substr inner iat dem 定義 div ssi class
1.IIFE：
Immediately-Invoked function Expression 函數模組自調用
2.代碼實現
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <div id="demo">的麼的事</div></head><body><script> (function () { document.write("好啊好啊"); })(); //定義$ (window.$=function (args) { //定義val function val() { return getElem().innerHTML; } function getElem() { if(args!=null){ if(args.indexOf("#")==0){ return document.getElementById(args.substring(args.indexOf("#")+1,args.length)); } } } return { val:val } })(); document.write($("#demo").val());</script></body></html>
js中的寫出想jquery中的函數一樣調用
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