34 lines
No EOL
1.1 KiB
JavaScript
Executable file
34 lines
No EOL
1.1 KiB
JavaScript
Executable file
function broadcast(componentName, eventName, params) {
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this.$children.forEach(child => {
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const name = child.$options.name;
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if (name === componentName) {
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child.$emit.apply(child, [eventName].concat(params));
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} else {
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// todo 如果 params 是空数组，接收到的会是 undefined
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broadcast.apply(child, [componentName, eventName].concat([params]));
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}
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});
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}
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export default {
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methods: {
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dispatch(componentName, eventName, params) {
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let parent = this.$parent || this.$root;
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let name = parent.$options.name;
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while (parent && (!name || name !== componentName)) {
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parent = parent.$parent;
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if (parent) {
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name = parent.$options.name;
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}
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}
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if (parent) {
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parent.$emit.apply(parent, [eventName].concat(params));
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}
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},
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broadcast(componentName, eventName, params) {
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broadcast.call(this, componentName, eventName, params);
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}
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}
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}; |