按文本查找选择选项值

Question

I have the text of a select and need to find the option corresponding value. I need to go because the select the item you seek is not selected

for (var i = 0; i < combo.length; i = i + 1) {
    if (combo.options.text == text){ // if the text value of the combo equals my variable
        var pref = combo.options[combo.selectedIndex].value;
        alert(pref);
    }
}

Answer 1

Need to compare the option in index i

for (var i = 0; i < combo.options.length; i++) {
    if (combo.options[i].text == text) {
        var pref = combo.options[i].value;
        alert(pref);
    }
}

Demo: Fiddle