小编Dan*_*sky的帖子

我不知道我的数据语法是否错误,但是当没有传递参数时这个相同的脚本正在工作,但是当传递参数时,它不起作用.为什么？

 <script type="text/javascript" src="jquery-1.7.2.min.js"> 
      <script type="text/javascript">
       function GetAge() {
           var StrYear = document.getElementById("StringYear").value;
           var StrMonth = document.getElementById("StringMonth").value;
           var StrDay = document.getElementById("StringDay").value;
           jQuery.support.cors = true;
           $.ajax({
               type: "POST",
               contentType: "application/json; charset=utf-8",
               dataType: "json",
               jsonp: 'jsonp_callback',
               async: false,
               url: 'http://localhost:50113/Service1.asmx/GetAge',
               data: "{ StrYear: "+StrYear+", StrMonth:"+ StrMonth+"  , StrDay: "+StrDay+"  }",
               success: function (msg) {
                   $('#divToBeWorkedOn').html(msg.d);
               },
               error: function (e) {
                   $('#divToBeWorkedOn').html("Unavailable");
               }
           });
         }
        </script> 

我试图timeNow在javascript和脚本结束时获取当前时间获取 timeEnd脚本完成执行的时间,例如:

newDate = new Date();
timeNow = newDate.getTime();

for(i=0; i < 5; i ++){

    console.log("printing" + i);
}

timeEnd = timeNow - newDate.getTime();

console.log(timeEnd);

我希望得到在几秒或几毫秒内执行此脚本所花费的时间,但结果为0.我不明白为什么,你能帮我谢谢.

我试图使用for循环声明变量,然后测试cols和rols是否相同.如果是,它将运行递归函数.但是,我在javascript中做的很麻烦.有人可以帮忙吗？

现在,它说,意想不到的变化==进行比较时,col.1和col.2.我也尝试col+j过for循环,但确实如此invalid left-hand side assignment

for (var i = 0; i < 2; i++) {
  var col = {};
  col.i = Math.floor(Math.random() * cols);
  col.i = Math.floor(Math.random() * rows);
}

if (col.1 == col.2 && row.1 == row.2) {
  return this.getRandomBlock();
}

当您收到1条通知或消息时，如何更改Facebook上将标题更改为“（1）Facebook”的方式显示在浏览器选项卡上的网站的当前标题？

当我们调用此命令时rails runner test.rb -e production,我们看到此错误:

test.rb:2:in `<top (required)>': undefined local variable or method `hello' for main:Object (NameError)
        from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands/runner.rb:51:in `eval'
        from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands/runner.rb:51:in `<top (required)>'
        from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:64:in `require'
        from /usr/local/lib/ruby/gems/1.9.1/gems/railties-3.2.12/lib/rails/commands.rb:64:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

test.rb的内容:

hello

def hello
        puts "hi"

end

为什么会这样？我们在Rails 3.2.12上.