看看一个论坛的checkForm()函数 哈哈
function checkForm() {
formErrors = '';
document.post.message.value = '';
if (document.post.input.value.length < 2) {
formErrors = '您发表的文章必须有内容。';
}
var msg=document.post.input.value;
if(msg.indexOf("在线等")!=-1){
formErrors = formErrors+"在线等是违禁词汇!";
}
if(msg.indexOf("求救")!=-1){
formErrors = formErrors+"求救是违禁词汇!";
}
if(msg.indexOf("救命")!=-1){
formErrors = formErrors+"救命是违禁词汇!";
}
if(msg.indexOf("大虾")!=-1){
formErrors = formErrors+"大虾是违禁词汇!";
}
if(msg.indexOf("急急急")!=-1){
formErrors = formErrors+"急急急是违禁词汇!";
}
if(msg.indexOf("跪求")!=-1){
formErrors = formErrors+"跪求是违禁词汇!";
}
if(msg.indexOf("高人指点")!=-1){
formErrors = formErrors+"高人指点是违禁词汇!";
}
if(msg.indexOf("高手到哪里")!=-1){
formErrors = formErrors+"高手到哪里是违禁词汇!";
}
if(msg.indexOf("快来帮忙")!=-1){
formErrors = formErrors+"快来帮忙是违禁词汇!";
}
if(msg.indexOf("没有人回答")!=-1){
formErrors = formErrors+"没有人回答是违禁词汇!";
}
if(msg.indexOf("菜鸟求")!=-1){
formErrors = formErrors+"菜鸟求是违禁词汇!";
}
if(msg.indexOf("菜鸟问")!=-1){
formErrors = formErrors+"菜鸟问是违禁词汇!";
}
if(msg.indexOf("大侠帮忙")!=-1){
formErrors = formErrors+"大侠帮忙是违禁词汇!";
}
if(msg.indexOf("我很急")!=-1){
formErrors = formErrors+"我很急是违禁词汇!";
}
if(msg.indexOf("新手求")!=-1){
formErrors = formErrors+"新手求是违禁词汇!";
}
if(msg.indexOf("我是新手")!=-1){
formErrors = formErrors+"我是新手是违禁词汇!";
}
if(msg.indexOf("我是菜鸟")!=-1){
formErrors = formErrors+"我是菜鸟是违禁词汇!";
}
if(msg.indexOf("高手指点")!=-1){
formErrors = formErrors+"高手指点是违禁词汇!";
}
if(msg.indexOf("高手帮忙")!=-1){
formErrors = formErrors+"高手帮忙是违禁词汇!";
}
if(msg.indexOf("求求")!=-1){
formErrors = formErrors+"求求是违禁词汇!";
}
if(msg.indexOf("求助")!=-1){
formErrors = formErrors+"求助是违禁词汇!";
}
if(msg.indexOf("请赐教")!=-1){
formErrors = formErrors+"请赐教是违禁词汇!";
}
if(msg.indexOf("高手指教")!=-1){
formErrors = formErrors+"高手指教是违禁词汇!";
}
if(msg.indexOf("万分感谢")!=-1){
formErrors = formErrors+"万分感谢是违禁词汇!";
}
if(msg.indexOf("谢谢大侠")!=-1){
formErrors = formErrors+"谢谢大侠是违禁词汇!";
}
if(msg.indexOf("救救")!=-1){
formErrors = formErrors+"救救是违禁词汇!";
}
if(msg.indexOf("请帮忙")!=-1){
formErrors = formErrors+"请帮忙是违禁词汇!";
}
if(msg.indexOf("大家帮忙")!=-1){
formErrors = formErrors+"大家帮忙是违禁词汇!";
}
if(msg.indexOf("请指教")!=-1){
formErrors = formErrors+"请指教是违禁词汇!";
}
if(msg.indexOf("大家指点")!=-1){
formErrors = formErrors+"大家指点是违禁词汇!";
}
if(msg.indexOf("大家帮")!=-1){
formErrors = formErrors+"大家帮是违禁词汇!";
}
if(msg.indexOf("新手的问题")!=-1){
formErrors = formErrors+"新手的问题是违禁词汇!";
}
if(msg.indexOf("救命")!=-1){
formErrors = formErrors+"救命是违禁词汇!";
}
if(msg.indexOf("大侠")!=-1){
formErrors = formErrors+"大侠是违禁词汇!";
}
if(msg.indexOf("帮帮忙")!=-1){
formErrors = formErrors+"帮帮忙是违禁词汇!";
}
if(msg.indexOf("紧急寻求")!=-1){
formErrors = formErrors+"紧急寻求是违禁词汇!";
}
if(msg.indexOf("高手请进")!=-1){
formErrors = formErrors+"高手请进是违禁词汇!";
}
if(msg.indexOf("求教")!=-1){
formErrors = formErrors+"求教是违禁词汇!";
}
if(msg.indexOf("救我")!=-1){
formErrors = formErrors+"救我是违禁词汇!";
}
if(msg.indexOf("帮帮我")!=-1){
formErrors = formErrors+"帮帮我是违禁词汇!";
}
if(msg.indexOf("寡人")!=-1){
formErrors = formErrors+"寡人是违禁词汇!";
}
if (formErrors) {
alert(formErrors);
return false;
} else {
if (document.post.quick_quote.checked) {
document.post.message.value = document.post.last_msg.value;
}
document.post.message.value += document.post.input.value;
return true;
}
}