Javascript 对文本输入执行条件

我有一个文本输入，现在我想接受该输入，询问nodeID[]的条件，并在匹配时为[I]赋值

即。。。输入=1FA02C，变量i=[3]

<script>
function myFunction()

{
    var myNode = document.getElementById('myNode').value;
    document.getElementById('enterNode').innerHTML = myNode;
}

</script>
<tr><input type="text" id="myNode" value="Enter Node">

<script>
var nodeID = new Array ();
nodeID[0] ="1FA01A"; 
nodeID[1] ="1FA01C"; 
nodeID[2] ="1FA02A"; 
nodeID[3] ="1FA02C"; 
nodeID[4] ="1FA03A"; 

</script>

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检查下面的代码片段。我相信它能满足你的需求

<!-- HTML -->
<input type="text" id="myNode" value="" placeholder="Enter Node">

// JavaScript
var nodeID = [];
nodeID[0] = "1FA01A"; 
nodeID[1] = "1FA01C"; 
nodeID[2] = "1FA02A"; 
nodeID[3] = "1FA02C"; 
nodeID[4] = "1FA03A"; 

// The array above could be writen like this as well
// var nodeID = ["1FA01A", "1FA01C", "1FA02A", "1FA02C", "1FA03A"];

document.getElementById('myNode').onkeyup = function(){
  index = nodeID.indexOf(this.value);
  if(index != -1) this.value = index;  
};

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检查下面我的答案，如果你觉得有用，请告诉我。