用于检查字段是否包含特殊字符的Javascript. [英] Javascript to Check if field has special characters.

问题描述

我有一个昵称，我想使用javascript设置一些条件，例如帖子末尾的
我想要的是Javascript以检查字段nick是否具有特殊字符，例如此示例<"我该怎么做

Hi,

I have a field nick i want to set some condition using javascript like the ones at the end of the post
what i want is javascript to Check if field nick has special characters like for example this sample "<" how do i do that

if (nick.value.length == 0)
{
    alert("wrong name");
    nick.focus();
    return;
}
if (nick.value.length >= 50)
{
    alert("wrong name");
    nick.focus();
    return;
}

问候

推荐答案

您可以使用以下代码:

You can use something like this:

var splChars = "*|,\":<>[]{}`\';()@&

#％" ; for ( var i = 0 ; i < nick.value.length; i ++){ 如果(splChars.indexOf(nick.value.charAt(i))！= -1){ 警报(" )； nick.focus(); }

#%"; for (var i = 0; i < nick.value.length; i++) { if (splChars.indexOf(nick.value.charAt(i)) != -1){ alert ("Illegal characters detected!"); nick.focus(); }

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