下面展示实现的效果:
体的实现过程:
(1)HTML结构:
<table border='1' class="tablebox" id='tablebox'> <tr> <td> <input type="button" name="bold" value='Bold' class="bold"> </td> <td> <input type="button" name="italic" value='Italic' class="italic"> </td> <td> <input type="button" name="underline" value='Underline' class="decotation"> </td> <td>size <select name="fontSize" class="font"> <option value="1">1</option> <option value="3">3</option> <option value="5">5</option> <option value="6">6</option> <option value="7">7</option> </select> </td> <td>img <select name="insertImage"> <option value="">请选择图片</option> <option value="timg.jpg">timg.jpg</option> <option value="timg1.jpg">timg1.jpg</option> <option value="timg2.jpg">timg2.jpg</option> <option value="timg3.jpg">timg3.jpg</option> <option value="timg4.jpg">timg4.jpg</option> </select> </td> <td> <input type="button" name="selectAll" value='全选' class="selectAll"> </td> <td> <input type="button" name="undo" value='撤销' class="undo"> </td> <td> <input type="button" name="justifyLeft" value='left' class="justifyLeft"> </td> <td> <input type="button" name="justifyCenter" value='center' class="justifyCenter"> </td> <td> <input type="button" name="justifyRight" value='right' class="justifyRight"> </td> </tr> <tr> <td colspan='10'> <p class="text" contenteditable="true">这是一个用p的contenteditable属性以及document.execCommand实现的一个简易富文本编辑器。</p> </td> </tr> </table>
(2)JS实现逻辑:
(function() { //富文本编辑器类 class Editor { constructor() { this.bindElem(); } bindElem() { var text = document.querySelector('.text'); var txt = null; var tablebox = document.getElementById_x('tablebox'); var inputbs = tablebox.querySelectorAll('input,select'); for (var i = 0; i { if (inputbs[i].tagName.toLowerCase() == 'input') { this.action(inputbs[i], inputbs[i].name); } else if (inputbs[i].tagName.toLowerCase() == 'select') { inputbs[i].onchange = function() { document.execCommand(this.name, true, this.value); } } } } action(obj, attr) { obj.onclick = function() { document.execCommand(attr, true); } } } new Editor(); })();
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