使用 javascript/jquery 从字符串中获取整数值
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Getting Integer value from a String using javascript/jquery
提问by Kichu
These are the strings I have:
这些是我拥有的字符串：
"test123.00"
"yes50.00"
I want to add the 123.00 with 50.00.
我想用 50.00 添加 123.00。
How can I do this?
我怎样才能做到这一点？
I used the command parseInt() but it displays NaN error in alert box.
我使用了命令 parseInt() 但它在警告框中显示 NaN 错误。
This is the code:
这是代码：
str1 = "test123.00";
str2 = "yes50.00";
total = parseInt(str1)+parseInt(str2);
alert(total);
回答by Pranay Rana
just do this , you need to remove char other than "numeric" and "." form your string will do work for you
只需这样做，您需要删除“数字”和“。”以外的字符。形成你的字符串会为你工作
yourString = yourString.replace ( /[^\d.]/g, '' );
your final code will be
你的最终代码将是
str1 = "test123.00".replace ( /[^\d.]/g, '' );
str2 = "yes50.00".replace ( /[^\d.]/g, '' );
total = parseInt(str1, 10) + parseInt(str2, 10);
alert(total);
Demo
演示
回答by nunespascal
For parseInt to work, your string should have only numerical data. Something like this:
要使 parseInt 工作，您的字符串应该只有数字数据。像这样的东西：
str1 = "123.00";
str2 = "50.00";
total = parseInt(str1)+parseInt(str2);
alert(total);
Can you split the string before you start processing them for a total?
在开始处理它们之前，您可以拆分字符串吗？
回答by FosterZ
回答by Sanket
Is this logically possible??.. I guess the approach that you must take is this way :
这在逻辑上是可能的吗？？.. 我想你必须采取的方法是这样的：
Str1 ="test123.00"
Str2 ="yes50.00"
This will be impossible to tackle unless you have delimiter in between testand 123.00
除非您在test和之间有分隔符，否则这是不可能解决的123.00
eg: Str1 = "test-123.00"
Then you can split this way
那么你可以这样拆分
Str2 = Str1.split("-");
This will return you an array of words split with "-"
这将返回一个用“-”分割的单词数组
Then you can do parseFloat(Str2[1])to get the floating value i.e 123.00
然后你可以做得到parseFloat(Str2[1])浮动值即123.00
