Zero1000

JavaScript

terms:
indexOf:

1. 基本例

index.html 
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>

<div id="app">
	{{a}}<hr>
	{{b}}<br>
	{{c}}<br>	
	{{d}}<br>		
	
	
</div>

<script>

a=[0,2,0,0,2]

 

 
b=a.indexOf(2)

c=a.indexOf(2,b+1) 

d=a.indexOf(3) 









new Vue({
  
	el: '#app',
	data: {
		a:a,
		b:b,
		c:c,
		d:d,
			
	}
})
</script>