附加的Javascript文件号

Question

It works fine with Google Chrome and Mozilla... But does not work correctly with Internet Explorer.

var col = document.getElementById('myFormid');
var fields = col.getElementsByTagName('input');

for(x in fields){
if(fields[x].name == 'doc[]' && fields[x].value != ''){
files++;    
}
}

Answer 1

You shouldn't use for...in to iterate over arrays, as you will access the array's prototype methods along with its elements. Just use the regular for syntax and see if that helps:

var col = document.getElementById('myFormid');
var fields = col.getElementsByTagName('input');

for (var i = 0; i < fields.length; i++) {
  var field = fields[i];

  if ((field.name == 'doc[]') && (field.value != '')) {
    files++;    
  }
}