Using loops and splits to replace and delete elements is tested very simple but practical, especially suitable for beginners
<!DOCTYPE> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Use loops and splits to replace and delete elements</title> <script> var arr = new Array("ab","aa","bc","ab","ss","ab","ss","ab","ss","dd","ab","aa","aa","aa","aa"); while(arr.indexOf("ab") != -1){ console.log("1"+arr); arr.splice(arr.indexOf("ab"),1,"**"); } console.log(arr); while(arr.indexOf("**") != -1){ console.log(arr); arr.splice(arr.indexOf("**"),1); } console.log(arr); </script> </head> <body> </body> </html>ie8 does not support indexOf and splice