jQuery how to load some json records into a form fields?

问题

i have a json file:

 {
    "data": "Click",
    "size": "Here"    }

and a form:

<form>
First name: <input type="text" name="firstname" /><br />
Last name: <input type="text" name="lastname" />
</form> 

i was wondering what is the correct sintax for loading multiple json records into multiple form elements?? Something like a form that u want to u want to modify and the values get queered into those fields

i know i can use:

$getJSON('link_to_json_file' function() {

});

but i'm stuck here thanks

回答1:

Or if your data return was fieldname value pairs like:

{"firstname" : "John", "lastname" : "Doe"}

you could do it like:

$.getJSON('url_to_file', function(data) {
    for (var i in data) {
        $('input[name="'+i+'"]').val(data[i]);
    }
});

回答2:

Could you take a look at the JQuery loadJSON plugin on the http://code.google.com/p/jquery-load-json/ ? On the page http://code.google.com/p/jquery-load-json/wiki/WorkingWithFormElements is explained how this plugin load JSON object into the form. You can also find one live example here http://jquery-load-json.googlecode.com/svn/trunk/edit.html?ID=17. I think that this is exactly what you need. Just create empty form and load json in the form using the following code:

$('form').loadJSON(data);

This plugin handles all form elements such as check boxes, select list radio buttons etc. If you use it you will need to download plugin from the http://code.google.com/p/jquery-load-json/source/browse/trunk/scripts/jquery.loadJSON.js.

回答3:

So, what's wrong with $.getJSON? It works fine:

$.getJSON("1.json", function(data) {
  $('input[name="firstname"]').val(data["data"]);
  $('input[name="lastname"]').val(data["size"]);
});

回答4:

You may also use $.get like below;

$.get('your_file.[php/json]',function(d){
    $("input[name='firstname']").val(d.data);
    $("input[name='firstname']").val(d.size);
},'json');

来源：https://stackoverflow.com/questions/5604729/jquery-how-to-load-some-json-records-into-a-form-fields