Sou*_*uet 5 javascript contenteditable vue.js
我正在尝试使文本编辑器类似于Medium。我正在使用内容可编辑的段落标签,并将每个项目存储在数组中,并使用v-for呈现每个项目。但是,我在使用v-model将文本与数组绑定时遇到问题。似乎与v模型和contenteditable属性发生冲突。这是我的代码:
<div id="editbar">
<button class="toolbar" v-on:click.prevent="stylize('bold')">Bold</button>
</div>
<div v-for="(value, index) in content">
<p v-bind:id="'content-'+index" v-bind:ref="'content-'+index" v-model="content[index].value" v-on:keyup="emit_content($event)" v-on:keyup.delete="remove_content(index)" contenteditable></p>
</div>
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在我的脚本中:
export default {
data() {
return {
content: [{ value: ''}]
}
},
methods: {
stylize(style) {
document.execCommand(style, false, null);
},
remove_content(index) {
if(this.content.length > 1 && this.content[index].value.length == 0) {
this.content.splice(index, 1);
}
}
}
}
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我还没有在网上找到任何答案。
Dav*_*don 12
我尝试了一个示例,并且eslint-plugin-vue报告说元素v-model
不支持p
。请参阅有效的v模型规则。
在撰写本文时,Vue不直接支持您想要的内容。我将介绍两个通用解决方案:
<template>
<p
contenteditable
@input="onInput"
>
{{ content }}
</p>
</template>
<script>
export default {
data() {
return { content: 'hello world' };
},
methods: {
onInput(e) {
console.log(e.target.innerText);
},
},
};
</script>
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Editable.vue
<template>
<p
ref="editable"
contenteditable
v-on="listeners"
/>
</template>
<script>
export default {
props: {
value: {
type: String,
default: '',
},
},
computed: {
listeners() {
return { ...this.$listeners, input: this.onInput };
},
},
mounted() {
this.$refs.editable.innerText = this.value;
},
methods: {
onInput(e) {
this.$emit('input', e.target.innerText);
},
},
};
</script>
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索引值
<template>
<Editable v-model="content" />
</template>
<script>
import Editable from '~/components/Editable';
export default {
components: { Editable },
data() {
return { content: 'hello world' };
},
};
</script>
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经过多次迭代,我发现对于您的用例而言,不使用单独的组件会更容易获得可行的解决方案。contenteditable
元素似乎非常棘手-尤其是在列表中呈现时。我发现删除后必须手动更新innerText
每个文件p
,以使其正常工作。我还发现使用id可以工作,但不能使用refs。
在模型和内容之间可能存在一种完全双向绑定的方法,但是我认为这将需要在每次更改后操纵光标位置。
<template>
<div>
<p
v-for="(value, index) in content"
:id="`content-${index}`"
:key="index"
contenteditable
@input="event => onInput(event, index)"
@keyup.delete="onRemove(index)"
/>
</div>
</template>
<script>
export default {
data() {
return {
content: [
{ value: 'paragraph 1' },
{ value: 'paragraph 2' },
{ value: 'paragraph 3' },
],
};
},
mounted() {
this.updateAllContent();
},
methods: {
onInput(event, index) {
const value = event.target.innerText;
this.content[index].value = value;
},
onRemove(index) {
if (this.content.length > 1 && this.content[index].value.length === 0) {
this.$delete(this.content, index);
this.updateAllContent();
}
},
updateAllContent() {
this.content.forEach((c, index) => {
const el = document.getElementById(`content-${index}`);
el.innerText = c.value;
});
},
},
};
</script>
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Alm*_*itt 10
我想我可能想出了一个更简单的解决方案。见下面的片段:
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
</head>
<body>
<main id="app">
<div class="container-fluid">
<div class="row">
<div class="col-8 bg-light visual">
<span class="text-dark m-0" v-html="content"></span>
</div>
<div class="col-4 bg-dark form">
<button v-on:click="bold_text">Bold</button>
<span class="bg-light p-2" contenteditable @input="handleInput">Change me!</span>
</div>
</div>
</div>
</main>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script>
new Vue({
el: '#app',
data: {
content: 'Change me!',
},
methods: {
handleInput: function(e){
this.content = e.target.innerHTML
},
bold_text: function(){
document.execCommand('bold')
}
}
})
</script>
</body>
</html>
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解释:
您可以编辑跨度,因为我添加了标签contenteditable
。请注意,在 上input
,我将调用 handleInput 函数,该函数将内容的 innerHtml 设置为您插入到可编辑范围中的任何内容。然后,要添加粗体功能,您只需选择要加粗的内容并单击粗体按钮。
添加奖金!它也适用于 cmd+b ;)
希望这对某人有所帮助!
快乐编码
请注意,我通过 CDN 引入了用于样式和 vue 的 bootstrap css,以便它可以在代码段中运行。
小智 5
您可以使用 watch 方法创建两种方式绑定 contentEditable。
Vue.component('contenteditable', {
template: `<p
contenteditable="true"
@input="update"
@focus="focus"
@blur="blur"
v-html="valueText"
@keyup.ctrl.delete="$emit('delete-row')"
></p>`,
props: {
value: {
type: String,
default: ''
},
},
data() {
return {
focusIn: false,
valueText: ''
}
},
computed: {
localValue: {
get: function() {
return this.value
},
set: function(newValue) {
this.$emit('update:value', newValue)
}
}
},
watch: {
localValue(newVal) {
if (!this.focusIn) {
this.valueText = newVal
}
}
},
created() {
this.valueText = this.value
},
methods: {
update(e) {
this.localValue = e.target.innerHTML
},
focus() {
this.focusIn = true
},
blur() {
this.focusIn = false
}
}
});
new Vue({
el: '#app',
data: {
len: 4,
val: "Test",
content: [{
"value": "<h1>Heading</h1><div><hr id=\"null\"></div>"
},
{
"value": "<span style=\"background-color: rgb(255, 255, 102);\">paragraph 1</span>"
},
{
"value": "<font color=\"#ff0000\">paragraph 2</font>"
},
{
"value": "<i><b>paragraph 3</b></i>"
},
{
"value": "<blockquote style=\"margin: 0 0 0 40px; border: none; padding: 0px;\"><b>paragraph 4</b></blockquote>"
}
]
},
methods: {
stylize: function(style, ui, value) {
var inui = false;
var ivalue = null;
if (arguments[1]) {
inui = ui;
}
if (arguments[2]) {
ivalue = value;
}
document.execCommand(style, inui, ivalue);
},
createLink: function() {
var link = prompt("Enter URL", "https://codepen.io");
document.execCommand('createLink', false, link);
},
deleteThisRow: function(index) {
this.content.splice(index, 1);
if (this.content[index]) {
this.$refs.con[index].$el.innerHTML = this.content[index].value;
}
},
add: function() {
++this.len;
this.content.push({
value: 'paragraph ' + this.len
});
},
}
});
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<script src="https://unpkg.com/vue@2.6.10/dist/vue.min.js"></script>
<div id="app">
<button class="toolbar" v-on:click.prevent="add()">ADD PARAGRAPH</button>
<button class="toolbar" v-on:click.prevent="stylize('bold')">BOLD</button>
<button class="toolbar" v-on:click.prevent="stylize('italic')">ITALIC</button>
<button class="toolbar" v-on:click.prevent="stylize('justifyLeft')">LEFT ALIGN</button>
<button class="toolbar" v-on:click.prevent="stylize('justifyCenter')">CENTER</button>
<button class="toolbar" v-on:click.prevent="stylize('justifyRight')">RIGHT ALIGN</button>
<button class="toolbar" v-on:click.prevent="stylize('insertOrderedList')">ORDERED LIST</button>
<button class="toolbar" v-on:click.prevent="stylize('insertUnorderedList')">UNORDERED LIST</button>
<button class="toolbar" v-on:click.prevent="stylize('backColor',false,'#FFFF66')">HEIGHLIGHT</button>
<button class="toolbar" v-on:click.prevent="stylize('foreColor',false,'red')">RED TEXT</button>
<button class="toolbar" v-on:click.prevent="createLink()">CREATE LINK</button>
<button class="toolbar" v-on:click.prevent="stylize('unlink')">REMOVE LINK</button>
<button class="toolbar" v-on:click.prevent="stylize('formatBlock',false,'H1')">H1</button>
<button class="toolbar" v-on:click.prevent="stylize('formatBlock',false,'BLOCKQUOTE')">BLOCK QUOTE</button>
<button class="toolbar" v-on:click.prevent="stylize('underline')">UNDERLINE</button>
<button class="toolbar" v-on:click.prevent="stylize('strikeThrough')">STRIKETHROUGH</button>
<button class="toolbar" v-on:click.prevent="stylize('superscript')">SUPERSCRIPT</button>
<button class="toolbar" v-on:click.prevent="stylize('subscript')">SUBSCRIPT</button>
<button class="toolbar" v-on:click.prevent="stylize('indent')">INDENT</button>
<button class="toolbar" v-on:click.prevent="stylize('outdent')">OUTDENT</button>
<button class="toolbar" v-on:click.prevent="stylize('insertHorizontalRule')">HORIZONTAL LINE</button>
<button class="toolbar" v-on:click.prevent="stylize('insertParagraph')">INSERT PARAGRAPH</button>
<button class="toolbar" v-on:click.prevent="stylize('selectAll')">SELECT ALL</button>
<button class="toolbar" v-on:click.prevent="stylize('removeFormat')">REMOVE FORMAT</button>
<button class="toolbar" v-on:click.prevent="stylize('undo')">UNDO</button>
<button class="toolbar" v-on:click.prevent="stylize('redo')">REDO</button>
<contenteditable ref="con" :key="index" v-on:delete-row="deleteThisRow(index)" v-for="(item, index) in content" :value.sync="item.value"></contenteditable>
<pre>
{{content}}
</pre>
</div>
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我昨天就明白了!确定了这个解决方案。我基本上只是通过更新任何可能的事件来手动跟踪数组中的innerHTML content
,并通过手动分配带有动态引用的相应元素来重新渲染,例如content-0
,,,content-1
...工作得很好:
<template>
<div id="editbar">
<button class="toolbar" v-on:click.prevent="stylize('bold')">Bold</button>
</div>
<div>
<div v-for="(value, index) in content">
<p v-bind:id="'content-'+index" class="content" v-bind:ref="'content-'+index" v-on:keydown.enter="prevent_nl($event)" v-on:keyup.enter="add_content(index)" v-on:keyup.delete="remove_content(index)" contenteditable></p>
</div>
</div>
</template>
<script>
export default {
data() {
return {
content: [{
html: ''
}]
}
},
methods: {
add_content(index) {
//append to array
},
remove_content(index) {
//first, check some edge conditions and remove from array
//then, update innerHTML of each element by ref
for(var i = 0; i < this.content.length; i++) {
this.$refs['content-'+i][0].innerHTML = this.content[i].html;
}
},
stylize(style){
document.execCommand(style, false, null);
for(var i = 0; i < this.content.length; i++) {
this.content[i].html = this.$refs['content-'+i][0].innerHTML;
}
}
}
}
</script>
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