<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<script src="vue.js"></script>
</head>
<body>
<div>
<h1>--钩子函数参数--</h1>
<div id="example-1" v-demo:foo.a.b="message"></div>
<script>
Vue.directive('demo', {
bind: function (el, binding, vnode) {
var s = JSON.stringify
el.innerHTML =
'name: ' + s(binding.name) + '<br>' +
'value: ' + s(binding.value) + '<br>' +
'expression: ' + s(binding.expression) + '<br>' +
'argument: ' + s(binding.arg) + '<br>' +
'modifiers: ' + s(binding.modifiers) + '<br>' +
'vnode keys: ' + Object.keys(vnode).join(', ')
}
})
new Vue({
el: '#example-1',
data: {
message: 'hello!'
}
})
</script>
</div>
<div>
<h1>--动态指令参数1--</h1>
<div id="example-2">
<p>Scroll down the page</p>
<p v-pin="200">Stick me 200px from the top of the page</p>
</div>
<script>
Vue.directive('pin', {
bind: function (el, binding, vnode) {
el.style.position = 'fixed'
el.style.top = binding.value + 'px'
}
})
new Vue({
el: '#example-2'
})
</script>
</div>
<div>
<h1>--动态指令参数2--</h1>
<div id="example-3">
<p>Scroll down inside this section ↓</p>
<p v-pin2:[direction]="200">I am pinned onto the page at 200px to the left.</p>
</div>
<script>
Vue.directive('pin2', {
bind: function (el, binding, vnode) {
el.style.position = 'fixed'
var s = (binding.arg == 'left' ? 'left' : 'top')
el.style[s] = binding.value + 'px'
}
})
new Vue({
el: '#example-3',
data: function () {
return {
direction: 'left'
}
}
})
</script>
</div>
</body>
</html>