如何获取javascript对象中的值？

Question

I have a javascript object in .aspx page which have some parameters whose values needed to be fetched from .aspx fields on page load .

This is the javascript object-

<script type='text/javascript'> 
trackingObject = {text1:"",text2:"",Date1:""};</script>

The values of text1 , text2 , Date1 needs to replaced from .aspx page fields(like from textbox ).

How can I achieve this with the help of RegisterStartupScript or any other easy and alternative method?

Answer 1

First of all, assign Id for those controls, then

<script type='text/javascript'>
    var text1Text = document.getElementById('text1Id').value;
    var text2Text = document.getElementById('text2Id').value;
    var date1Text = document.getElementById('date1Id').value;
    var obj = {text1:text1Text, text2:text2Text, Date1:date1Text };
</script>

Answer 2

try this

   <asp:TextBox runat="server" ID="txt1" runat="server"/>
   // you can get this text box value by jquery like this
    <script type='text/javascript'>
        var txt1val = $('#<%= txt1.ClientID %>').val();
    </script>

 <script type='text/javascript'>
    var text1Text = $('#<%= yourAspTextbox1ID.ClientID %>').val();
    var text2Text = $('#<%= yourAspTextbox2ID.ClientID %>').val();
    var text3Text = $('#<%= yourAspTextbox3ID.ClientID %>').val();
    var obj = { text1: text1Text, text2: text2Text, Date1: text3Text};
</script>

Answer 3

Using jQuery you can do this:

HTML

<input type="text" /><br />
<input type="text" /><br />
<input type="text" /><br />

<input type="button" value="Show Obj"/>

Javascript

$("input[type='button']").on("click", function () {
    var values = [];

    $("input[type='text']").each(function () {
        values.push($(this).val());
    });

    trackingObject = {    
        text1: values[0],
        text2: values[1],
        Date1: values[2]
    };

    alert(JSON.stringify(trackingObject, null, 4));
});

JSFIDDLE

Answer 4

尝试这个

Page.RegisterClientScriptBlock("test", "<script type='text/javascript'>$(document).ready(function(){trackingObject = {text1:'" + txtbox1.Text + "',text2:'" + txtbox2.Text + "',Date1:'" + txtDate.Text + "'};}) ;</script>");