使用正则表达式提取数据

Question

I have these text fields.

<input type="text" value="<p>aaaaaaaaaaa</p>" id="tab_4_0_li_div_content"><input type="text" value="lab" id="tab_4_0_li_data"><input type="text" value="<p>dddd</p>" id="tab_4_1_li_div_content"><input type="text" value="client" id="tab_4_1_li_data">

Here tab_4_*_li_data is a <li> html of tab , and tab_4_0_li_div_content is id of <div> which will be show on <li> click.

Now I want to extract data from this input fields using regular expression. For example

client,lab 

as key and

<p>aaaaaaaaaaa</p>,<p>dddd</p>

as value of key.

If you see these are related to each others.

tab_4_0_li_div_content        tab_4_0_li_data
<p>aaaaaaaaaaa</p>             lab

tab_4_1_li_div_content        tab_4_1_li_data
<p>dddd</p>                    client

Div content part can content any thing, It's an text area. So how we do this?

Answer 1

There is no reason to have to use a regular expression to parse HTML. One thing, you are not going to have a good time going it. Second, use the power of the DOM

 var contents = $("[id$=content]"); //find the elements that have an id that end with content var datas = $("[id$=data]"); //find the elements that have an id that end with data var details = {}; //object to hold results datas.each( function(i) { details[datas[i].value] = contents[i].value; }); //start looping and generate the object with the details you are after console.log(details); //Object {lab: "<p>aaaaaaaaaaa</p>", client: "<p>dddd</p>"} 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <input type="text" value="<p>aaaaaaaaaaa</p>" id="tab_4_0_li_div_content"><input type="text" value="lab" id="tab_4_0_li_data"><input type="text" value="<p>dddd</p>" id="tab_4_1_li_div_content"><input type="text" value="client" id="tab_4_1_li_data"> 

Now that code assumes the data and content elements are in the same order, if not, than it would require a little processing, but it is not that hard to do.

  var datas = $("[id$=data]"); var details = {}; datas.each(function(i, elem) { var id = elem.id; var val = $("#" + id.replace("data", "div_content")).val(); details[elem.value] = val; }); console.log(details); //Object {lab: "<p>aaaaaaaaaaa</p>", client: "<p>dddd</p>"} 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <input type="text" value="<p>aaaaaaaaaaa</p>" id="tab_4_0_li_div_content"> <input type="text" value="lab" id="tab_4_0_li_data"> <input type="text" value="<p>dddd</p>" id="tab_4_1_li_div_content"> <input type="text" value="client" id="tab_4_1_li_data"> 

Answer 2

You can do it like this:

function getValuesById(id1,id2){
    var vals = {};
    if(id1 === undefined)
        id1 = "\\d+";
    if(id2 === undefined)
        id2 = "\\d+";

    $("input").each(function (index, value) {
        console.log(new RegExp('tab_(' + id1 + '_' + id2 + ')_li_data'));
        var match = value.id.match(new RegExp('tab_(' + id1 + '_' + id2 + ')_li_data'));
        if (match) {
            vals[value.value] = $("#tab_" + match[1] + "_li_div_content").val();
        }
    });
    return vals;
}

Here I search through all input fields and match against tab_DIGITS_DIGITS_li_div_data and put that as a key and corresponding li_div_content as value in object values.

Check it out here: JSFiddle

UPDATE: I have updated the code to a function where you can send in a parameter to your two numerical values and will use any number if not supplied, ie use as getValuesById(4) for values like tab_4_*_li