test
test2

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The sample function of test and test2 and html are:
<form> <input type=text name=t1 id=t1 value=1> <input type=text name=t2 id=t1 value=2> <input type=text name=t3 id=t1 value=3> </form> ..... function test() { alert('isArray='+isArray(document.getElementById('t1'))); alert(document.getElementById('t1').value); } function test2() { alert('isArray='+isArray(document.getElementsByTagName('input'))); var eles = document.getElementsByTagName('input'); var output = ""; for(i=0;i<eles.length;i++) { output += eles[i].name + '\n'; } alert(output); } //------------------------------------------------------------------- // isArray(obj) // Returns true if the object is an array, else false //------------------------------------------------------------------- function isArray(obj){return(typeof(obj.length)=="undefined")?false:true;}