麻烦JS高手帮我看下这个问题，谢谢！

[流年岁月]

[{"ID":1,"Name":"张三","Age":20},{"ID":2,"Name":"李四","Age":20},{"ID":3,"Name":"王五","Age":20},...]


用什么办法可以得到Name为张三的ID编号？



请教各位大哥了！

[wuyq11]

function showData() {
var data = eval('[{"title":"测试标题","name":"a"},{"title":"测试标题","name":"b"}];');
var o = eval(data);//将json字符串转换成js对象
for (var i in o) {//循环json对象数组
for (var key in o[i]) {
alert("field:" + key + ", value:" + o[i][key]);
}
}}

[chen_ya_ping]

  var str = [{ "ID": 1, "Name": "张三", "Age": 20 }, { "ID": 2, "Name": "李四", "Age": 20 }, { "ID": 3, "Name": "王五", "Age": 20}];
                for (var i = 0; i < str.length; i++) {
                    if (str[i].Name == "王五") {
                        alert(str[i].ID);
                    }
                }

[flyerwing]

var a=[{"ID":1,"Name":"张三","Age":20},{"ID":2,"Name":"李四","Age":20},{"ID":3,"Name":"王五","Age":20},...];
alert(a[0].ID);
这样好象成吧.