Rumah >hujung hadapan web >tutorial js >自动检查并替换文本框内的字符
<HTML> <HEAD> <META http-equiv='Content-Type' content='text/html; charset=gb2312'> <TITLE>自动检查并替换文本框内的字符</TITLE> <SCRIPT LANGUAGE="JavaScript"> <!-- Begin function replaceChars(entry) { out = "a"; // 要替代的字母 add = "z"; // 替换后的字母 temp = "" + entry; while (temp.indexOf(out)>-1) { pos= temp.indexOf(out); temp = "" + (temp.substring(0, pos) + add + temp.substring((pos + out.length), temp.length)); } document.subform.text.value = temp; } // End --> </script> </HEAD> <BODY > <center> <form name="subform"> <input type=text name=text size=40 value="abcdabcd"><br> <input type=button name=action value="Done!" onClick="replaceChars(document.subform.text.value);"> </form> </center> </BODY> </HTML>
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