Question

嗨，我是Jquery的新手。我想添加两个变量。两者都是全球变数。请参阅此代码末尾的“添加变量”。 “cashupfirst”变量显示核心值，但“cashupsecond”变量显示“undefined”。但是我可以在此代码之前显示“cashupsecond”的正确值。请帮忙。

 jQuery(function($) {

  var cashupfirst, cashupsecond;
  var a, parent, input, doneLink, b, i, eq, c, z;
  $(".Cashups").delegate("td:eq(3) > a", "click", function(event) {

    //Index reading(not used here)
    //var eq = $(this).parent().children("a").index(this);


    // The `a` has been clicked; cancel the action as
    // we're handling it
    event.preventDefault();
    event.stopPropagation();

    // Remember it and its parent
    a = $(this);
    parent = a.parent();

    // Insert an input in front of it, along with a done link
    // because blur can be problematic
    input = $("<input type='text' size='10'>");
    input.insertBefore(a);
    input.blur(doneHandler);
    doneLink = $("<a href='#'>done</a>");
    doneLink.insertBefore(a);
    doneLink.click(doneHandler);

    // Put the text of the link in the input
    input.val(a.text());


    // Temporarily detach the link from the DOM to get it
    // out of the way
    a.detach();

    // Give the input focus, then wait for it to blur
    input[0].focus();

    // Our "done" handler
    function doneHandler() {
      // Replace the content of the original link with
      // the updated content
      a.text(input.val());

      cashupfirst = a.text();
      alert(cashupfirst);
      //Set cookie to pass the text value to update it to table permanently
      $.cookie('demoCookie',cashupfirst,{expires: 7, path: '/'});       

      // Put the link back, remove our input and other link
      a.insertBefore(input);
      input.remove();
      doneLink.remove();

      }     

  }); 



  $(".Cashups").delegate("td:eq(9) > a", "click", function(event) {

    // The `a` has been clicked; cancel the action as
    // we're handling it
    event.preventDefault();
    event.stopPropagation();

    // Remember it and its parent
    a = $(this);
    parent = a.parent();

    // Insert an input in front of it, along with a done link
    // because blur can be problematic
    input = $("<input type='text' size='10'>");
    input.insertBefore(a);
    input.blur(doneHandler);
    doneLink = $("<a href='#'>done</a>");
    doneLink.insertBefore(a);
    doneLink.click(doneHandler);

    // Put the text of the link in the input
    input.val(a.text());


    // Temporarily detach the link from the DOM to get it
    // out of the way
    a.detach();

    // Give the input focus, then wait for it to blur
    input[0].focus();

    // Our "done" handler
    function doneHandler() {
      // Replace the content of the original link with
      // the updated content
      a.text(input.val());      
      cashupsecond = a.text();
      alert(cashupsecond);

      //Set cookie to pass the text value to update it to table permanently
       $.cookie('demoCookie1',cashupsecond,{expires: 7, path: '/'});


      // Put the link back, remove our input and other link
      a.insertBefore(input);
      input.remove();
      doneLink.remove();

    }

    //Add the variables

            if  (cashupfirst!= '' && cashupsecond!= '') {
        alert(cashupfirst);
                alert(cashupsecond);
        var xyz = (parseInt(cashupfirst) + parseInt(cashupfirst));
            jQuery('td#cashcalculator_total a').html(xyz);
    } 

  }); 
  //alert(cashupsecond);


});

Answer 1

尝试

var xyz = parseInt(cashupfirst) + parseInt(cashupsecond);

alert函数不会返回已警告的内容。

编辑：

好的，我明白了什么是错的。您必须将变量添加到第二个doneHandler函数中，否则它将不会等到您收到cashupsecond的值：

// Our "done" handler
function doneHandler() {
    ...

    //Add the variables
    if  (cashupfirst!= '' && cashupsecond!= '') {
        alert(cashupfirst);
        alert(cashupsecond);
        var xyz = parseInt(cashupfirst) + parseInt(cashupsecond);
        jQuery('td#cashcalculator_total a').html(xyz);
    }
}

// Don't add the variables here.

无法在Jquery中添加两个变量

1 个答案: