javascript - vue 2.3 AJAX data binding not updating -


after successful ajax call data rendered on page not updating. remaining empty / null.

it seems missing how connect data returned front end variable , dynamically / live rendered html elements.

here relevant code snippets context. clear missing / incorrect?

javascript

page = new vue({    el: "#container",    data: {     option_id: null,     option_name: null   },    created:function() {      $.ajax({       type: 'post',       contenttype: 'application/json',       datatype: 'json',       url: 'ajax_methods/get_option',       success: function (ajax_data) {          self = this;          self.option_id = ajax_data.option_id;                 self.option_name = ajax_data.option_name;        },       error: function (e) {         console.log(e)       }     })    } })

html

<script type="text/javascript" src="https://unpkg.com/vue@2.3.3"></script> <div id="container">    <p>{{ option_name }}</p>      <button v-on:click="send_option()"       type="button"       id="left_button"       name="left_button"       v-bind:value="option_id">  </div>

checking ajax success

when entering following in console, non null values come expected:

  • self.option_id
  • self.option_name

first, if exact code, self don't think initialized. use var self = this or let self = this

but mainly, need define self outside of ajax call. in javascript this keyword refers calling object. directly inside of created() function, it's vue instance. however, this not refer vue instance once inside ajax callback.

understand javascript’s “this” clarity, , master it

created:function() {     var self =        $.ajax({       type: 'post',       contenttype: 'application/json',       datatype: 'json',       url: 'ajax_methods/get_option',       success: function (ajax_data) {          self.option_id = ajax_data.option_id;                 self.option_name = ajax_data.option_name;        },       error: function (e) {         console.log(e)       }     })    }

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