javascript - VueJS Custom Directive Function as Argument -


i've got simple directive:

html:

<div id="app">   <div v-sample:callback="greet"></div> </div> <script>   var app = new vue({     el: "#app",     data: {       files: [],     },     methods: {       greet: function (arg) {         alert(arg);       },     },   }); </script>

js:

vue.directive('sample', {   bind: function (el, binding, vnode) {     el.addeventlistener('...', function () {       // ...       callback.call(arg, ...);     });   }, });

however, i'm unclear of appropriate syntax function , evaluate. what's proper way within directive?

you can use binding.value should function in case. it's prebound correct context call (pass in if need something):

vue.directive('sample', {   bind: function (el, binding, vnode) {     el.addeventlistener('click', function () {       binding.value()     });   }, });

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