JavaScript / jQuery getSelection突出显示合并span html元素

Question

 function highlight_text(sel) { span = htmlSpanHlt(); if (sel.getRangeAt) { range = sel.getRangeAt(0); } span.appendChild(range.extractContents()); range.insertNode(span); } function htmlSpanHlt() { element = document.createElement("span"); element.setAttribute('class', 'hlt'); return element; } 

 .hlt { background: yellow; } 

 <div class="highlight"> <p> <span class="hlt">Lorem</span> ipsum dolor sit amet, zril accusata postulant at ius. Dicat etiam luptatum ea pri. Duo docendi vulputate dissentiet ut, tollit bonorum duo eu. Maiorum adolescens scriptorem usu eu, sit idque facer causae ei. Choro nostrum at pro, sumo essent suscipiantur pri ex. Quo case veritus definiebas eu, sit postulant dissentias ei.<br> <br> Mel cu porro decore, cum et simul recteque inciderint. His ne omnes sententiae, ut omittantur dissentiet accommodare sed. Pro minim necessitatibus ne, no malis integre quo. Sed utroque molestiae interpretaris ne. Oportere indoctum at has, te sale semper eum, ea nam vitae dissentiet. </p> </div> 

The word "Lorem" has a classname "hlt" which was already been highlighted. What I want is: if I want to highlight another text including the word "Lorem" w/c is already been highlighted. I want to merge their span html element. Example: If I highlight "ipsum" next to the word "Lorem" and I include also "Lorem" the result will be Lorem Ipsum. Can someone help me? Thank u.

Answer 1

How about this?

 function highlight_text(sel) { var hlt_element = document.getElementsByClassName('hlt')[0]; if (!hlt_element || sel.containsNode(hlt_element,true)) { add_hlt_element(sel); } } function add_hlt_element(sel) { var element = document.createElement("span"); var range = sel.getRangeAt(0); element.setAttribute('class', 'hlt'); element.innerHTML = sel.toString().replace(/(?:\\r\\n|\\r|\\n)/g, '<br />\\n'); range.deleteContents(); range.insertNode(element); var highlight_div = document.getElementsByClassName("highlight")[0]; highlight_div.innerHTML = highlight_div.innerHTML.replace('</span><span class="hlt">',''); } window.onmouseup = function() { var sel = window.getSelection(); highlight_text(sel); } 

 .hlt { background: yellow; } 

 <div class="highlight"> <p> Lorem ipsum dolor sit amet, zril accusata postulant at ius. Dicat etiam luptatum ea pri. Duo docendi vulputate dissentiet ut, tollit bonorum duo eu. Maiorum adolescens scriptorem usu eu, sit idque facer causae ei. Choro nostrum at pro, sumo essent suscipiantur pri ex. Quo case veritus definiebas eu, sit postulant dissentias ei.<br> <br> Mel cu porro decore, cum et simul recteque inciderint. His ne omnes sententiae, ut omittantur dissentiet accommodare sed. Pro minim necessitatibus ne, no malis integre quo. Sed utroque molestiae interpretaris ne. Oportere indoctum at has, te sale semper eum, ea nam vitae dissentiet. </p> </div>