使SVG图标出现在JS上以执行列表项

时间：2019-07-04 22:10:40

标签： javascript html css svg

我正在尝试创建待办事项列表。每个是li元素的项目都有两个SVG图标。此时，当您在输入字段中输入文本并单击其旁边的加号按钮时，会出现li元素，但不会出现SVG图标。每当我向待办事项列表中添加新项目时，如何使SVG图标出现？

/*var removeSVG = svgElementFromString('<svg version="1.1" id="Capa_1" id="removeB" class="removeB" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 328.51 328.51" style="enable-background:new 0 0 328.51 328.51;" xml:space="preserve"><polygon points="229.044,88.858 164.255,153.647 99.466,88.858 88.858,99.466 153.647,164.255 88.858,229.044 99.466,239.651 
			164.255,174.862 229.044,239.651 239.651,229.044 174.862,164.255 239.651,99.466 		"/> </svg>');*/


document.getElementById('button-plus').addEventListener('click', function(){
  var value = document.getElementById('input').value;
  if(value) addItem(value);
});
function addItem(text){
  var list = document.getElementById('to-do');
  
  item = document.createElement("li");
  item.innerText = text;
  var buttons = document.createElement('div');
  buttons.classList.add('buttons');
  
  var remove = document.createElement('button');
  remove.classList.add('remove');
  //remove.innerHTML = removeSVG;
  
  var complete = document.createElement('button');
  complete.classList.add('complete');
  //complete.innerHTML = completeSVG;
  
  buttons.appendChild(remove);
  buttons.appendChild(complete);
  item.appendChild(buttons);

  list.appendChild(item);
}
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

header {
  width: 100%;
  height: 70px;
  background: rgb(162, 193, 60);
  border-bottom-right-radius: 12px;
  border-bottom-left-radius: 12px;
  box-shadow: 0 0 5px rgb(159, 160, 155);
  padding: 0 10px 0 10px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}

header input {
 appearance: none;
 text-indent: 10px;
 border-bottom-right-radius: 25px;
 border-top-right-radius: 25px;
 border-top-left-radius: 12px;
 border-bottom-left-radius: 12px;
 width: 100%;
 background: rgb(233, 255, 170);
 height: 45px;
 font-family: Century Gothic;
 border: none;
 box-sizing: border-box;
 padding-right: 60px;
}

header button {
position: absolute;
right: 10px;
top: 13.5px;
height: 43px;
width: 50px;
border-bottom-right-radius: 25px;
border-top-right-radius: 25px;
appearance: none;
border: none;
background: rgb(238, 255, 173);
border-left: 2px solid rgb(162, 193, 60);
cursor: pointer;
}

button svg {
z-index: 6;
position: absolute;
border-bottom-right-radius: 25px;
border-top-right-radius: 25px;
right: 0;
top: -1px;
}/*
.container{
  width: 100%;
  margin: auto;
  border: 1px solid black;
}*/
 .to-do {
  width: 100%;
  float: left;
  list-style-type: none;
   box-sizing: border-box;
   padding: 0;
  /*border: 1px lid black;*/
}
.to-do li{
  width: 85%;
  background: white;
  box-shadow: 0 0 5px rgb(159, 160, 155, 0.5);
  min-height: 50px;
  margin: auto;
  border-radius: 5px;
  box-sizing: border-box;
  font-family: Century Gothic;
  padding: 0 105px 0 25px;
  position: relative;
  margin-top: 25px;
  display: flex;
  align-items: center;
  
}
.to-do li .buttons{
  position: absolute;
  top: 0;
  right: 0;
  height: 50px;
  width: 100px;
  background: white;
}
.to-do li .buttons button{
  appearance: none;
  width: 47.5px;
  height: 50px;
  box-sizing: border-box;
  position: relative;
  background: white;
  border: none;
  cursor: pointer;
}
.to-do li .buttons button:last-of-type:before{
  content: '';
  width: 0.8px;
  height: 29px;
  background: gray;
  opacity: 0.4;
  float: left;
  margin-left: -6px;
}/*
.to-do li button:nth-child(1):hover .x-fill{
  fill: red;
  transition-duration: 0.3s;
}
.to-do li button:nth-child(2):hover .tick-fill{
  fill: orange;
  transition-duration: 0.3s;
}*/
.complete svg{
  fill: green;
}
.complete svg:hover{
  fill: orange;
  transition-duration: 0.3s;
}
.remove svg{
  fill: gray;
  opacity: 0.8;
}
.remove svg:hover{
  fill: red;
  opacity: 0.7;
  transition-duration: 0.3s;
}
<head>

<title>To do List App</title>

</head>
<body>
<header>
  <input type="text" placeholder="Next on my to do list is...." id="input">
  <button id="button-plus">
 <svg width="48" height="43" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
  <rect fill="#0186b2" height="28" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" width="4" x="19.5" y="8.5"/>
  <rect fill="#47bcbc" height="3" id="svg_2" stroke="#000000" stroke-dasharray="null" stroke-linecap="null" stroke-linejoin="null" stroke-opacity="0" stroke-width="5" width="28" x="7.5" y="20.5"/>
</svg>
   
    </svg>
  </button>
</header>
  <div class="container">
<ul id="to-do" class="to-do">
  <li>First to do <div class="buttons">
    <button class="remove"><!--<svg width="45" height="50" id="delete-button" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
    <rect fill="gray" height="28.44763" class="x-fill" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(39.2894 22.2822 26.8218)" width="1.49252" x="21.53592" y="12.59797"/>
  <rect fill="gray" height="30.65491" class="x-fill" id="svg_2" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(-45.1764 22.3317 26.664)" width="1.70493" x="21.47928" y="11.33651"/>
</svg>-->
     <svg version="1.1" id="Capa_1" id="removeB" class="removeB" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 328.51 328.51" style="enable-background:new 0 0 328.51 328.51;" xml:space="preserve">
		<polygon points="229.044,88.858 164.255,153.647 99.466,88.858 88.858,99.466 153.647,164.255 88.858,229.044 99.466,239.651 
			164.255,174.862 229.044,239.651 239.651,229.044 174.862,164.255 239.651,99.466 		"/>
      </svg>
    </button>
    <button class="complete"><!--<svg width="45" height="50" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
   <rect fill="#21b221" height="28.44763" class="tick-fill" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(39.2894 24.2822 25.8218)" width="1.49252" x="23.53592" y="11.59797"/>
  <rect fill="#21b221" height="12.26151" class="tick-fill" id="svg_2" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(-45.1764 11.8548 33.147)" width="1.70493" x="11.00232" y="27.0162"/>
</svg>-->
    <svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 52 52" style="enable-background:new 0 0 52 52;" xml:space="preserve">
	
	<path d="M38.252,15.336l-15.369,17.29l-9.259-7.407c-0.43-0.345-1.061-0.274-1.405,0.156c-0.345,0.432-0.275,1.061,0.156,1.406
		l10,8C22.559,34.928,22.78,35,23,35c0.276,0,0.551-0.114,0.748-0.336l16-18c0.367-0.412,0.33-1.045-0.083-1.411
		C39.251,14.885,38.62,14.922,38.252,15.336z"/>
  </svg>
    </button>
    </div></li>
  </ul>
    <ul id="completed" class="completed">
      
    </ul>
  </div>
  
</body>

1 个答案:

答案 0 :(得分：0)

有一个简单的方法可以做到这一点。 Javascript提供了功能强大的 cloneNode（）方法，该方法可克隆整个元素，包括其所有子元素。您无需手动重新创建待办事项框的结构。

用法很简单：给您要克隆的元素-li-一个ID，例如母版，然后将您的 addItem（）函数更改为此：

function addItem(text){
  var list = document.getElementById('to-do');
  var item = document.getElementById("master").cloneNode(true);
  item.removeAttribute("id");
  item.firstChild.data=text;
  list.appendChild(item);
}

克隆实际上意味着克隆，因此克隆的元素将与原始元素共享相同的ID，这就是我们必须从克隆中删除ID的原因。

这是一个例子：

document.getElementById('button-plus').addEventListener('click', function() {
  var value = document.getElementById('input').value;
  if (value) addItem(value);
});

function addItem(text) {
  var list = document.getElementById('to-do');
  var item = document.getElementById("master").cloneNode(true);
  item.removeAttribute("id");
  item.firstChild.data = text;
  list.appendChild(item);
}
body {
  height: 100%;
  width: 100%;
  margin: 0;
  padding: 0;
}

header {
  width: 100%;
  height: 70px;
  background: rgb(162, 193, 60);
  border-bottom-right-radius: 12px;
  border-bottom-left-radius: 12px;
  box-shadow: 0 0 5px rgb(159, 160, 155);
  padding: 0 10px 0 10px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}

header input {
  appearance: none;
  text-indent: 10px;
  border-bottom-right-radius: 25px;
  border-top-right-radius: 25px;
  border-top-left-radius: 12px;
  border-bottom-left-radius: 12px;
  width: 100%;
  background: rgb(233, 255, 170);
  height: 45px;
  font-family: Century Gothic;
  border: none;
  box-sizing: border-box;
  padding-right: 60px;
}

header button {
  position: absolute;
  right: 10px;
  top: 13.5px;
  height: 43px;
  width: 50px;
  border-bottom-right-radius: 25px;
  border-top-right-radius: 25px;
  appearance: none;
  border: none;
  background: rgb(238, 255, 173);
  border-left: 2px solid rgb(162, 193, 60);
  cursor: pointer;
}

button svg {
  z-index: 6;
  position: absolute;
  border-bottom-right-radius: 25px;
  border-top-right-radius: 25px;
  right: 0;
  top: -1px;
}


/*
.container{
  width: 100%;
  margin: auto;
  border: 1px solid black;
}*/

.to-do {
  width: 100%;
  float: left;
  list-style-type: none;
  box-sizing: border-box;
  padding: 0;
  /*border: 1px lid black;*/
}

.to-do li {
  width: 85%;
  background: white;
  box-shadow: 0 0 5px rgb(159, 160, 155, 0.5);
  min-height: 50px;
  margin: auto;
  border-radius: 5px;
  box-sizing: border-box;
  font-family: Century Gothic;
  padding: 0 105px 0 25px;
  position: relative;
  margin-top: 25px;
  display: flex;
  align-items: center;
}

.to-do li .buttons {
  position: absolute;
  top: 0;
  right: 0;
  height: 50px;
  width: 100px;
  background: white;
}

.to-do li .buttons button {
  appearance: none;
  width: 47.5px;
  height: 50px;
  box-sizing: border-box;
  position: relative;
  background: white;
  border: none;
  cursor: pointer;
}

.to-do li .buttons button:last-of-type:before {
  content: '';
  width: 0.8px;
  height: 29px;
  background: gray;
  opacity: 0.4;
  float: left;
  margin-left: -6px;
}


/*
.to-do li button:nth-child(1):hover .x-fill{
  fill: red;
  transition-duration: 0.3s;
}
.to-do li button:nth-child(2):hover .tick-fill{
  fill: orange;
  transition-duration: 0.3s;
}*/

.complete svg {
  fill: green;
}

.complete svg:hover {
  fill: orange;
  transition-duration: 0.3s;
}

.remove svg {
  fill: gray;
  opacity: 0.8;
}

.remove svg:hover {
  fill: red;
  opacity: 0.7;
  transition-duration: 0.3s;
}
<head>

  <title>To do List App</title>

</head>

<body>
  <header>
    <input type="text" placeholder="Next on my to do list is...." id="input">
    <button id="button-plus">
 <svg width="48" height="43" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
  <rect fill="#0186b2" height="28" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" width="4" x="19.5" y="8.5"/>
  <rect fill="#47bcbc" height="3" id="svg_2" stroke="#000000" stroke-dasharray="null" stroke-linecap="null" stroke-linejoin="null" stroke-opacity="0" stroke-width="5" width="28" x="7.5" y="20.5"/>
</svg>
   
    </svg>
  </button>
  </header>
  <div class="container">
    <ul id="to-do" class="to-do">
      <li id="master">First to do
        <div class="buttons">
          <button class="remove"><!--<svg width="45" height="50" id="delete-button" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
    <rect fill="gray" height="28.44763" class="x-fill" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(39.2894 22.2822 26.8218)" width="1.49252" x="21.53592" y="12.59797"/>
  <rect fill="gray" height="30.65491" class="x-fill" id="svg_2" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(-45.1764 22.3317 26.664)" width="1.70493" x="21.47928" y="11.33651"/>
</svg>-->
     <svg version="1.1" id="Capa_1" id="removeB" class="removeB" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 328.51 328.51" style="enable-background:new 0 0 328.51 328.51;" xml:space="preserve">
		<polygon points="229.044,88.858 164.255,153.647 99.466,88.858 88.858,99.466 153.647,164.255 88.858,229.044 99.466,239.651 
			164.255,174.862 229.044,239.651 239.651,229.044 174.862,164.255 239.651,99.466 		"/>
      </svg>
    </button>
          <button class="complete"><!--<svg width="45" height="50" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
   <rect fill="#21b221" height="28.44763" class="tick-fill" id="svg_1" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(39.2894 24.2822 25.8218)" width="1.49252" x="23.53592" y="11.59797"/>
  <rect fill="#21b221" height="12.26151" class="tick-fill" id="svg_2" stroke="#000000" stroke-opacity="0" stroke-width="5" transform="rotate(-45.1764 11.8548 33.147)" width="1.70493" x="11.00232" y="27.0162"/>
</svg>-->
    <svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
	 viewBox="0 0 52 52" style="enable-background:new 0 0 52 52;" xml:space="preserve">
	
	<path d="M38.252,15.336l-15.369,17.29l-9.259-7.407c-0.43-0.345-1.061-0.274-1.405,0.156c-0.345,0.432-0.275,1.061,0.156,1.406
		l10,8C22.559,34.928,22.78,35,23,35c0.276,0,0.551-0.114,0.748-0.336l16-18c0.367-0.412,0.33-1.045-0.083-1.411
		C39.251,14.885,38.62,14.922,38.252,15.336z"/>
  </svg>
    </button>
        </div>
      </li>
    </ul>
    <ul id="completed" class="completed">

    </ul>
  </div>

</body>

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