如下方法傳值存在兩個問題:
1.不能去掉外面包裹的標籤
2.若是要傳值的太多,這種方法很搓很難閱讀javascript
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script src="./vue.js"></script> <!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> --> </head> <body> <div id="root"> <child content="<p>My name is Tom Cat</p>"></child> </div> <script type="text/javascript"> Vue.component("child", { props: ["content"], template: `<div> <p>hello</p> <br/>//把html標籤轉義顯示出來了:<br/><br/> {{content}}<br/> <br/>//正常渲染了html標籤(也顯示了外面包裹的div): <div v-html='this.content'></div> //而模版佔位符template也不能去掉外面包裹的標籤,並且整個都不渲染了:<br/> <template v-html='this.content'></template> <br/> </div>` }); var vm = new Vue({ el: "#root" }) </script> </body> </html>
那用啥方法?用插槽啊!
插槽的使用細節:html
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script src="./vue.js"></script> <!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> --> </head> <body> <div id="root"> <child> //這是插槽咯: <h1>world</h1> </child> //注意:content是保留關鍵字,不能用做組件,so 用my-content(用myContent這樣的駝峯命名會報錯): <my-content1> <div class="header">header</div> <div class="footer">footer</div> </my-content1> <br>//具名插槽: <my-content2> <div class="header" slot="header">header</div> <div class="footer" slot="footer">footer</div> </my-content2> </div> <script type="text/javascript"> Vue.component("child", { //props: ["content"], template: `<div> <p>hello</p> <slot>默認內容,當父組件不傳遞插槽內容的時候顯示</slot> </div>` }); Vue.component("my-content1", { //props: ["content"], template: `<div> <slot></slot> <div class='content'>hello</div> <slot></slot> </div>` }); Vue.component("my-content2", { //props: ["content"], template: `<div> <slot name="header">不給該插槽傳值,則顯示我</slot> <div class='content'>hello</div> <slot name="footer"></slot> </div>` }); var vm = new Vue({ el: "#root" }) </script> </body> </html>