使用jQuery的.get在回调函数中处理数据不起作用

Question

I have a strange problem with processing data coming back from a php script in javascript.

This is my code:

 $.get('status.php', null, resp, 'text');


 function resp(data) {

      console.error(data);

      if(data == 'ready') {

           alert(data);               
      }
 }

Now, data definitely contains 'ready' as I can see when I look at the error console (console.error(data); print me 'ready' in the console).

However the if-statement does not return true and therefore the alert statement is not executed.

But why? I can print data, I can see it is definitely equal to 'ready', yet the statement within the if-statement never gets executed.

I thought .get would just return a simple string. What am I missing?

thanks for any help!

Answer 1

may be you have extra spaces in your response, try:

function resp(data) {
      data = $.trim( data );
      console.error(data);
      if(data == 'ready') {    
           alert(data);               
      }
 }

Answer 2

may be there are spaces in the text, can you try if($.trim(data) == 'ready')

$.get('status.php', null, resp, 'text');


function resp(data) {

    console.error(':' + data + ':');

    if($.trim(data) == 'ready') {

        alert(data);               
    }
}

Answer 3

jQuery可以区分数据和回调，请尝试将函数作为第二个参数传递。

$.get('status.php', resp, 'text');