<! Doctype html> <html> <head> <meta http-equiv = "konten tipe" content = "text/html; charset = utf-8"/> <itement> satu instance javascript per hari-hapus blank pada akhir string </iteme> <cript> function white () {var incut = document = document = document = document = "function () {var incut = document = document = document = document =" var incut = document = document = "var incut = document = document =" var incutby var lines = input.value.split ("/n"); var resultString = ""; untuk (var i = 0; i <line.length; i ++) {var string = lines [i] .trim (); hasil hasil + = string + "-"; } waspada (resultstring); } </script> </head> <body> <textarea id = "inputid" placeholder = "Harap masukkan beberapa baris string"> </pextarea> <a href = "#" onclick = "white ()"> clickMe </a> </body> </ html>Mendeteksi browser versi yang lebih rendah, kompatibel ke belakang:
if (typeof string.trim == "tidak terdefinisi") string.prototype.trim = function () {return this.replace (/(^/s*) | (/s*$)/g, ""); }}