4.global对象 1)eval 例 4.1.1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> </head> <BODY> <SCRIPT LANGUAGE="JavaScript"> <!-- /*马克-to-win:var scriptCode = "c = a * b"; var a = 5; var b = 10; var c = 2; eval(scriptCode); 以上的话就相当于: eval("c = a * b");===c = a * b eval是global的方法, */ var result = window.eval("1+2/4") ;//根据上面所说,result=1+2/4; document.write(result) var s="today=new Date();document.write(today.toLocaleString())" eval(s) //--> </SCRIPT> </BODY> </HTML>
更多请见:https://blog.csdn.net/qq_43650923/article/details/102218623
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