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JS uses ActiveXObject to implement the function of blocking sensitive words in form submission
- 巴扎黑Original
- 2017-06-23 13:59:021967browse
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,'g'),"**");55 return str;
56 }57 </script>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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