Vue3 render渲染函数
hi，我是温新，一名PHPer
h函数用法：
h('标签元素','标签属性',[标签文本内容]);
本案例将使用渲染函数来展示不同的标题。
<span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">body</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">id</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"body"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">id</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"app"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">hh</span> <span style="box-sizing: border-box;color: rgb(0, 0, 204)">:level</span>=<span style="box-sizing: border-box;color: rgb(170, 17, 17)">"1"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span>hi,render<span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">hh</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">body</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"><</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">script</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">const</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">app</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Vue</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">createApp</span>({</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">app</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">component</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'hh'</span>, {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">props</span>:[<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'level'</span>],</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 渲染函数</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">render</span> () {</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">const</span> { <span style="box-sizing: border-box;color: rgb(0, 0, 255)">h</span> } <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">Vue</span>;</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// h() 虚拟DOM</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(170, 85, 0)">// 创建hN元素</span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">return</span> <span style="box-sizing: border-box;color: rgb(0, 85, 170)">h</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'h'</span><span style="box-sizing: border-box;color: rgb(152, 26, 26)">+</span><span style="box-sizing: border-box;color: rgb(119, 0, 136)">this</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">level</span>,{},[<span style="box-sizing: border-box;color: rgb(119, 0, 136)">this</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">$slots</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">default</span>()]);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> }</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> });</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span style="box-sizing: border-box"></span></span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"> <span style="box-sizing: border-box;color: rgb(119, 0, 136)">const</span> <span style="box-sizing: border-box;color: rgb(0, 0, 255)">vm</span> <span style="box-sizing: border-box;color: rgb(152, 26, 26)">=</span> <span style="box-sizing: border-box;color: rgb(0, 0, 0)">app</span>.<span style="box-sizing: border-box;color: rgb(0, 0, 0)">mount</span>(<span style="box-sizing: border-box;color: rgb(170, 17, 17)">'#app'</span>);</span><br></br><span style="box-sizing: border-box;padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)"></</span><span style="box-sizing: border-box;color: rgb(17, 119, 0)">script</span><span class="cm-tag cm-bracket" style="box-sizing: border-box;color: rgb(17, 119, 0)">></span></span>
h()函数的第三个参数可以是一个字符串或一个数组，如下写法是可以的
return h('h'+this.level,{},this.$slots.default());
this.$slots.default()接收的是插槽的中的数据。
我是温新
每天进步一点，就一点点
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