JavaScript问题原因 [英] JavaScript Problem Reason

问题描述

我在JS中遇到问题，我有两个变量a和b
都具有类似
的值
a =``1716e362-5afe-4c80-9fff-880aaf109638''

b =''1716e362-5afe-4c80-9fff-880aaf109638''

我已经应用了类似
的条件

if(a== b)
{
//do some thing
}

出现的问题是if条件出现为假

我也尝试过===但它仍然显示为假:(

谁能告诉我原因是什么?

a和b的值相同

解决方案

它必须正确运行，像
一样检查

<script type="text/javascript">

var a = ''1716e362-5afe-4c80-9fff-880aaf109638'';
var b = ''1716e362-5afe-4c80-9fff-880aaf109638'';
if(a==b)
{
 alert("true");
}
else
{
 alert("false");
}

</script>

如果警报为真，则警报为假

希望对您有所帮助.尝试使用Javascript调试器(Internet Explorer中为F12，Chrome中为Ctrl-Shift-I或Firefox使用Firebug)，然后在"if"语句中添加一个断点.然后，您应该可以检查a和b的值.

您还可以执行以下操作，

 <  脚本   类型  ="    语言  ="  javascript" <  /script  >  

i am having a problem in JS,i have two variables a and b
both have values like

a= ''1716e362-5afe-4c80-9fff-880aaf109638''

b= ''1716e362-5afe-4c80-9fff-880aaf109638''

I have applied a condition like

if(a== b)
{
//do some thing
}

The problem is arising is that the if condition is appearing false

I also tried === but its still showing false :(

Can any one tell me whats the reason??

a and b values are same

解决方案

It must function correctly , Check it like

<script type="text/javascript">

var a = ''1716e362-5afe-4c80-9fff-880aaf109638'';
var b = ''1716e362-5afe-4c80-9fff-880aaf109638'';
if(a==b)
{
 alert("true");
}
else
{
 alert("false");
}

</script>

If alerts true than same else alerts false

Hope it helps

My guess is that something is changing a or b (or both). Try using a Javascript debugger (F12 in Internet Explorer, Ctrl-Shift-I in Chrome or use Firebug for Firefox) and add a breakpoint at your "if" statement. You should then be able to examine the values of a and b.

You can also do the following,

<script type="text/javascript" language="javascript">
        var a = '1716e362-5afe-4c80-9fff-880aaf109638';
        var b = '1716e362-5afe-4c80-9fff-880aaf109638';
        if (parseInt(a) == parseInt(b)) {
            alert("Match");
        }
        else {
            alert("UnMatch");
        }
    </script>

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