function func() { var roopnum = parseInt(document.Formmain.ROOP.value); var regstr = document.Formmain.REGEXP.value; var text = document.Formmain.STR.value;
re = new RegExp(""); re.compile(regstr);
var nowDay = new Date(); var beforetime = nowDay.getTime();
for (i = 0; i < roopnum; i++) { text.match(re) } var nowDay = new Date(); var aftertime = nowDay.getTime(); var progress = aftertime-beforetime; document.Formmain.RESULT.value = progress