JS 根据DropDownList的Text选中某一项

var DropDownListCurrencyNew 
    =  document.getElementById('DropDownListCurrencyNew');
for(i = 0; i < DropDownListCurrencyNew.options.length; i++)
{
    if(DropDownListCurrencyNew.options[i].text == arrayValue[6])    
           {
               DropDownListCurrencyNew.options[i].selected = true; 
        }
};