47 lines
1.1 KiB
HTML
47 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<script src="../js/vue@2.7.16.js"></script>
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<title>自定义指令_函数式</title>
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</head>
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<body>
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<div id="app">
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<h2>当前值：<span v-text="num"></span></h2>
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<h2>放大十倍值：<span v-big="num"></span></h2>
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<button @click="num++">点击</button>
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<input type="text" v-fbind="num" />
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</div>
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</body>
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<script>
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const vm = new Vue({
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el: "#app",
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data: { num: 10 },
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directives: {
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// 指令所在模板被重新解析时
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big(el, binding) {
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el.innerText = binding.value * 10;
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},
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fbind: {
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bind(el, binding) {
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console.log("bind");
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el.value = binding.value;
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},
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inserted(el, binding) {
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console.log("inserted");
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el.focus();
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},
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update(el, binding) {
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console.log("update");
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el.value = binding.value;
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el.focus();
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},
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},
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},
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});
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</script>
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</html>
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