I am trying to copy one array to another and use this like the new array without any changes to old one:
<div id="app">
<div class="form-group">
<label>Test input</label>
<input v-model="testArray[0].name" type="text" class="form-control" placeholder="Input">
</div>
<br>
<pre>testArray: {{ testArray[0] | json}}</pre>
<pre>templateArray: {{ templateArray[0] | json }}</pre>
new Vue({
el: '#app',
data: {
testArray: [],
templateArray: [{name: "TEST"},],
},
ready: function() {
this.testArray = this.templateArray.slice(0);
},
});
the issue is that then I am updating new array 'testArray' I also change old array 'templateArray'.
The script in action: https://jsfiddle.net/4po1cpkp/7/
Is there any way to create new array based on array template without directly binding it to template?
As Vue.js documentation says:
Under the hood, Vue.js attaches a hidden property
__ob__and recursively converts the object’s enumerable properties into getters and setters to enable dependency collection. Properties with keys that starts with $ or _ are skipped.
You can store your template array with name started from underscore sign:
data: {
testArray: [],
_templateArray: [{ name: "TEST" }]
},
ready: function() {
this.testArray = this.$data._templateArray;
}
Or you if need it as a Vue.js object:
this.testArray = JSON.parse(JSON.stringify(this.templateArray));
The second case might be slow for big data.
Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments