jq循环输出数组并显示在html jQuery 遍历输出数组

声明数组是，并输出

var json = [

{"id":"1","tagName":"apple"},

{"id":"2","tagName":"orange"},

{"id":"3","tagName":"banana"},

{"id":"4","tagName":"watermelon"},

{"id":"5","tagName":"pineapple"}

];

$.each(json, function(idx, obj) {

alert(obj.tagName);

});

声明字符，将字符变成数组，遍历输出

var json = '[{"id":"1","tagName":"apple"},{"id":"2","tagName":"orange"},

{"id":"3","tagName":"banana"},{"id":"4","tagName":"watermelon"},

{"id":"5","tagName":"pineapple"}]';

$.each(JSON.parse(json), function(idx, obj) {

alert(obj.tagName);

});

//or

$.each($.parseJSON(json), function(idx, obj) {

alert(obj.tagName);

});