44 lines
1.4 KiB
JavaScript
44 lines
1.4 KiB
JavaScript
export default {
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install: (app) => {
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app.directive('click-outside', {
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mounted(el, binding) {
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const handler = (e) => {
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// 如果绑定的元素包含事件目标，或元素已经被移除，则不触发
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if (!el || el.contains(e.target) || e.target === el) return
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// 支持函数或对象 { handler: fn, exclude: [el1, el2], capture: true }
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const value = binding.value
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if (value && typeof value === 'object') {
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if (
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value.exclude &&
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value.exclude.some(
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(ex) => ex && ex.contains && ex.contains(e.target)
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)
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)
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return
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if (typeof value.handler === 'function') value.handler(e)
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} else if (typeof value === 'function') {
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value(e)
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}
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}
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// 存到 el 上，便于解绑
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el.__clickOutsideHandler__ = handler
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// 延迟注册，避免 mounted 时触发（比如当点击就是触发绑定动作时）
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setTimeout(() => {
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document.addEventListener('mousedown', handler)
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document.addEventListener('touchstart', handler)
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}, 0)
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},
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unmounted(el) {
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const h = el.__clickOutsideHandler__
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if (h) {
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document.removeEventListener('mousedown', h)
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document.removeEventListener('touchstart', h)
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delete el.__clickOutsideHandler__
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}
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}
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})
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}
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}
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