JS uses ActiveXObject to implement the function of blocking sensitive words in form submission-JS Tutorial-php.cn

JS uses ActiveXObject to implement the function of blocking sensitive words in form submission

巴扎黑

Release： 2017-06-23 13:59:02

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本例中敏感词ciku.txt放在C盘根目录下,采用的ActiveXObject插件获取本地文件内容。使用此插件不需网上下插件，直接用如下js代码即可。

浏览器需修改interner安全选项的级别，启用ActiveX才能获取到代码中的ActiveXObject插件。如下图所示：

js代码实现如下：

 1     <script type="text/javascript"> 2         // -------------- 全局变量，用来判断文本域中是否包含脏词,默认为false,即不包含脏词------- 3         var isDirty = false; 4         //使用ActiveX读取本地文件获取dirtyword词库    5         function readFile(){        
 6             //var ForReading = 1;  7             var fso = new ActiveXObject("Scripting.FileSystemObject"); 
 8             openF = fso.OpenTextFile("c:\\ciku.txt", 1); 
 9             var cikuStr= openF.ReadAll(); 
10             return cikuStr;11         }12         /*13         * 提交表单的主方法14         * 在提交表单的时候对内容进行过滤并在文本域显示过滤后的内容15         */16         function submitForm1() {17             var messageValue=document.getElementById("message").value;18             var cikuStr=readFile();19             var cikuArr= new Array();                                 //定义数组,存储敏感词 20             cikuArr=cikuStr.split(" ");                             //敏感字符分割                   21             for (var i=0;i<cikuArr.length;i++){ 
22                 var flag=cikuArr[i];23                 if(messageValue.indexOf(flag)>=0){                    //查找文本域中是否包含敏感字符，是则替换24                     filterWord(messageValue);                  
25                     var ifs=confirm("你的留言中含有不恰当的词语,系统已自动为你修改,是否继续提交?");26                     break;27                 }else{                                                //无敏感字符，直接提交表单28                     document.getElementById("message_board").submit();29                     break;30                 }             
31             }32             if(ifs){                                                //用户点击确定，则提交表单33                 document.getElementById("message_board").submit();34             }     
35         }36         /*37         * 对传进来的messageValue过滤并返回新内容       
38         */39         function filterWord(messageValue){40             // 根据文本域的id获取文本域对象内容41             var cikuStr=readFile();42             var cikuArr= new Array();                                 //定义数组,存储敏感词 43             cikuArr=cikuStr.split(" ");                             //敏感字符分割到数组内               44             for (var i=0;i<cikuArr.length;i++){ 
45                 messageValue=filterOneWord(messageValue,cikuArr[i]);//filterOneWord函数每次替换一个字符，需循环调用46             }         
47             document.getElementById("message").value=messageValue;  //将替换后的内容显示到文本域中    48         }49         /*50         * 这个函数用来过滤单个词语, 如果messageValue中含有oneDirtyWord, 则用"**"替换这个oneDirtyWord51         * messageValue --- 要过滤的语句52         */53         function filterOneWord(messageValue,oneDirtyWord){                
54             var str=messageValue.replace(new RegExp(oneDirtyWord,&#39;g&#39;),"**");55             return str;                    
56         }57      </script>

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表单部分代码：

<body><form name="message_board" id="message_board" action="aaa.html"><textarea name="message" id="message" cols="50" rows="10">"This is you post messsage"
——phpdream </textarea><br/><input type="button" value="提交留言" id="submitMessage" onclick="submitForm1()"/></form></body>

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