Change color of specific words in textarea

Question

I\'m building a Sql query builder and would like to change the text color of a word in a textarea when the user types in words like SELECT, FROM, WHERE.

I\'ve searche

Answer 1

You can't change the colours of words in a </code>, but you can use the <code>contenteditable</code> attribute to make a <code><div></code>, <code><span></code>, or <code><p></code> look like a <code><textarea></code>.</p> <p>To do this you can use a JavaScript plugin, but if you want to create a new one, the code below may help you.</p> <p>For this purpose, you need to get any word in the text. Then check that if it's a SQL keyword.</p> <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-js lang-js prettyprint-override"><code>// SQL keywords var keywords = ["SELECT","FROM","WHERE","LIKE","BETWEEN","NOT LIKE","FALSE","NULL","FROM","TRUE","NOT IN"]; // Keyup event $("#editor").on("keyup", function(e){ // Space key pressed if (e.keyCode == 32){ var newHTML = ""; // Loop through words $(this).text().replace(/[\s]+/g, " ").trim().split(" ").forEach(function(val){ // If word is statement if (keywords.indexOf(val.trim().toUpperCase()) > -1) newHTML += "<span class='statement'>" + val + " </span>"; else newHTML += "<span class='other'>" + val + " </span>"; }); $(this).html(newHTML); // Set cursor postion to end of text var child = $(this).children(); var range = document.createRange(); var sel = window.getSelection(); range.setStart(child[child.length-1], 1); range.collapse(true); sel.removeAllRanges(); sel.addRange(range); this.focus(); } });</code></pre> <pre class="snippet-code-css lang-css prettyprint-override"><code>#editor { width: 400px; height: 100px; padding: 10px; background-color: #444; color: white; font-size: 14px; font-family: monospace; } .statement { color: orange; }</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code><script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="editor" contenteditable="true"></div></code></pre> </div> </div> </p> </p> <div class="appendcontent"> </div> </div> <div class="jieda-reply"> <span class="jieda-zan button_agree" type="zan" data-id='535511'> <i class="iconfont icon-zan"></i> <em>0</em> </span> <span type="reply" class="showpinglun" data-id="535511"> <i class="iconfont icon-svgmoban53"></i> 讨论(0) </span> <div class="jieda-admin"> </div> <div class="noreplaytext bb"> <center><div> <a href="https://www.e-learn.cn/qa/q-135063.html"> 查看其它4个回答 </a> </div></center> </div> </div> <div class="comments-mod " style="display: none; float:none;padding-top:10px;" id="comment_535511"> <div class="areabox clearfix"> <form class="layui-form" action=""> <div class="layui-form-item"> <label class="layui-form-label" style="padding-left:0px;width:60px;">发布评论:</label> <div class="layui-input-block" style="margin-left:90px;"> <input type="text" placeholder="不少于5个字" AUTOCOMPLETE="off" class="comment-input layui-input" name="content" /> <input type='hidden' value='0' name='replyauthor' /> </div> <div class="mar-t10"><span class="fr layui-btn layui-btn-sm addhuidapinglun" data-id="535511">提交评论 </span></div> </div> </form> </div> <hr> <ul class="my-comments-list nav"> <li class="loading"> <img src='https://www.e-learn.cn/qa/static/css/default/loading.gif' align='absmiddle' />  加载中... </li> </ul> </div> </li> </ul> <div class="layui-form layui-form-pane"> <form id="huidaform" name="answerForm" method="post"> <div class="layui-form-item layui-form-text"> <a name="comment"></a> <div class="layui-input-block"> <script type="text/javascript" src="https://www.e-learn.cn/qa/static/js/neweditor/ueditor.config.js"></script> <script type="text/javascript" src="https://www.e-learn.cn/qa/static/js/neweditor/ueditor.all.js"></script> <script type="text/plain" id="editor" name="content" style="width:100%;height:200px;"></script> <script type="text/javascript"> var isueditor=1; var editor = UE.getEditor('editor',{ //这里可以选择自己需要的工具按钮名称,此处仅选择如下五个 toolbars:[['source','fullscreen', '|', 'undo', 'redo', '|', 'bold', 'italic', 'underline', 'fontborder', 'strikethrough', 'removeformat', 'formatmatch', 'autotypeset', 'blockquote', 'pasteplain', '|', 'forecolor', 'backcolor', 'insertorderedlist', 'insertunorderedlist', 'selectall', 'cleardoc', '|', 'rowspacingtop', 'rowspacingbottom', 'lineheight', '|', 'customstyle', 'paragraph', 'fontfamily', 'fontsize', '|', 'indent', '|', 'justifyleft', 'justifycenter', 'justifyright', 'justifyjustify', '|', 'link', 'unlink', 'anchor', '|', 'simpleupload', 'insertimage', 'scrawl', 'insertvideo', 'attachment', 'map', 'insertcode', '|', 'horizontal', '|', 'preview', 'searchreplace', 'drafts']], initialContent:'', //关闭字数统计 wordCount:false, zIndex:2, //关闭elementPath elementPathEnabled:false, //默认的编辑区域高度 initialFrameHeight:250 //更多其他参数，请参考ueditor.config.js中的配置项 //更多其他参数，请参考ueditor.config.js中的配置项 }); editor.ready(function() { editor.setDisabled(); 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