如何逐行读取文本区域HTML标记 [英] How to read line by line of a text area HTML tag

问题描述

我有一个文本区域，每行包含如下的整数值

I have a text area where each line contains Integer value like follows

      1234
      4321
     123445

我想检查用户是否确实输入了有效值，而不是一些有趣的值，如下所示

I want to check if the user has really enetered valid values and not some funny values like follows

      1234,
      987l;

为此，我需要逐行阅读文本区域并验证。
如何使用javascript逐行读取文本区域？

For that I need to read line by line of text area and validate that. How can i read line by line of a text area using javascript?

推荐答案

试试这个。

var lines = $('textarea').val().split('\n');
for(var i = 0;i < lines.length;i++){
    //code here using lines[i] which will give you each line
}

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