判断编辑器中是否含有特殊字符
<head>
<title>标题页</title>
<SCRIPT LANGUAGE="JavaScript">
var bForbidden = false;
var ch;
var strForbidden = new Array("<",">","."); //罗列所有被禁止的方法字符
function chk(str)
{
for (var i=0;i<strForbidden.length;i++){ //遍历用户输入的数据
for (var j=0;j<str.length;j++)
{
ch=str.substr(j,1);
if (ch==strForbidden[i]) //如果包含非法字符
{
bForbidden = true; //设置此变量为true
}
}
}
if (bForbidden){
alert("包含特殊字符,已经被禁止!");
}
}
</SCRIPT>
</head>
<body>
<input type=text name="txt1" value="this is test!">
<input type=button value="测试文本" onClick="javascript:chk(txt1.value)">
</body>
</html>
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