blocks|key|920241|text|我同意，我自己也遇到过这种行为。以下是解决方案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|920242|将this.isValueChanged函数的内容更改为以下内容。|920243|if(($input.val().length+>+0)+&&+($input.val()+!=+defaultValue))
++++++++++++return+true;
++++else+if(($input.val()+==+defaultValue)&&($input.val().length+>+0))
++++++++++++return+true;
++++else+if(($input.val().length+==+0)+&&+((undefined+===+defaultValue+)%7C%7C(defaultValue+==+"")))
++++++++++++return+true;
++++else
++++++++++++return+false;|code-block|syntax|javascript|920244|由于某些原因，在第一次交互时没有设置defaultValue，我猜如果您将其初始化为"“，您将不需要检查是否未定义。|920245|无论如何，defaultValue保存该单元格的前一个值，因此当它为空并且它是第一个被编辑的单元格时，它是未定义的，之后，对于所有其他空单元格，它被设置为"“。|920246|问题是，此函数需要告诉网格该值已更改，以便单元格编辑器验证输入。在所提供的实现中，表达式总是返回false，因为|920247|$input.val()+==+""+evaluates+to+true+and+then+the+expression+
!($input.val()+==+""+&&+defaultValue+==+null))+evaluates+to+false|920248|这意味着defaultValue一直是未定义的。|920249|希望这是有意义的，我的代码可以帮助你。|920250|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

I concur, just encountered this behavior myself. 
Here is the solution.

Change this.isValueChanged function contents to the following.

<pre><code>if(($input.val().length &gt; 0) &amp;&amp; ($input.val() != defaultValue))
 return true;
 else if(($input.val() == defaultValue)&amp;&amp;($input.val().length &gt; 0))
 return true;
 else if(($input.val().length == 0) &amp;&amp; ((undefined === defaultValue )||(defaultValue == "")))
 return true;
 else
 return false;
</code></pre>

For some reason defaultValue is not set during the first interraction, my guess if you initialize it to "" you would not need to check for undefined. 

At any rate defaultValue holds the previous value of the cell, so when it is empty and it is the first cell being edited it is undefined, after that it is set to "" for all other empty cells.

The problem is this function needs to tell the grid that the value has changed in order for the cell editor to validate the input. In the provided implementation the expression always returns false because 

<pre><code>$input.val() == "" evaluates to true and then the expression 
!($input.val() == "" &amp;&amp; defaultValue == null)) evaluates to false
</code></pre>

This means defaultValue is continuously undefined.

Hope that makes sense and my code helps you out.

blocks|key|2966456|text|我也有同样的问题，我认为理想情况下，当defaultValue没有初始化时，应该将它设置为undefined或null。因此，我通过以下方式修改了TextEditor：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2966457|function+TextEditor(args)+{
++++var+$input;
++++var+defaultValue;
++++var+scope+=+this;

++++this.loadValue+=+function+(item)+{
++++++++defaultValue+=+item[args.column.field]+%7C%7C+null;
++++++++$input.val(defaultValue);
++++++++$input[0].defaultValue+=+defaultValue;
++++++++$input.select();
++++};

++++this.isValueChanged+=+function+()+{
++++++++return+$input.val()+!=+defaultValue;
++++};

++++....|code-block|syntax|javascript|2966458|将默认defaultValue设置为null并简化isValueChanged。|2966459|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Had the same problem and I believe that ideally defaultValue should be set to undefined or null, when it wasn't initialized. So I've modified TextEditor in a following way:

<pre><code>function TextEditor(args) {
 var $input;
 var defaultValue;
 var scope = this;

 this.loadValue = function (item) {
 defaultValue = item[args.column.field] || null;
 $input.val(defaultValue);
 $input[0].defaultValue = defaultValue;
 $input.select();
 };

 this.isValueChanged = function () {
 return $input.val() != defaultValue;
 };

 ....
</code></pre>

setting default defaultValue to null and simplifying isValueChanged.

blocks|key|2966480|text|在第一个else+of+Roman中存在错误，返回为false。否则，即使值没有更改，单元格中的任何更改也会返回true。我试过了，它起作用了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2966481|this.isValueChanged+=+function+()+{
++++++++var+attuale+=+$input.val();
++++++++if((attuale.length+>+0)+&&+(attuale+!=+defaultValue))
++++++++++++return+true;
++++++++else+if((attuale+==+defaultValue)&&(attuale.length+>+0))
++++++++++++return+false;
++++++++else+if((attuale.length+==+0)+&&+((undefined+===+defaultValue+)%7C%7C(defaultValue+==+"")))
++++++++++++return+true;
++++++++else
++++++++++++return+false;
};|code-block|syntax|javascript|2966482|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

There is an error in the first else if of Roman, the return is false. Otherwise, any change in cell returns true even if the value has not been changed. 
I tried this and it works.

<pre><code>this.isValueChanged = function () {
 var attuale = $input.val();
 if((attuale.length &gt; 0) &amp;&amp; (attuale != defaultValue))
 return true;
 else if((attuale == defaultValue)&amp;&amp;(attuale.length &gt; 0))
 return false;
 else if((attuale.length == 0) &amp;&amp; ((undefined === defaultValue )||(defaultValue == "")))
 return true;
 else
 return false;
};
</code></pre>

blocks|key|2966500|text|这将检查两个值是否都为"“。我认为这应该返回true，因为验证器可能是“必需的”验证器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2966501|+this.isValueChanged+=+function+()+{
++//+this+needs+to+validate+if+both+are+empty+since+a+validator+might+be+a+"required"+validator
++if+($input.val()+==+""+&&+defaultValue+==+"")
++++return+true;
++else+
++++return+(!($input.val()+==+""+&&+defaultValue+==+""))+&&+($input.val()+!=+defaultValue);
};|code-block|syntax|javascript|2966502|首选的方法是创建一个自定义编辑器，这样您就不会弄乱核心库。|2966503|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

This checks for both values being "". I believe this should return true since a validator could be a "required" validator.

<pre><code> this.isValueChanged = function () {
 // this needs to validate if both are empty since a validator might be a "required" validator
 if ($input.val() == "" &amp;&amp; defaultValue == "")
 return true;
 else 
 return (!($input.val() == "" &amp;&amp; defaultValue == "")) &amp;&amp; ($input.val() != defaultValue);
};
</code></pre>

Preferred method would be to create a custom editor so you aren't mucking with the core library.

I have the requiredFieldValidator configured for one of my columns and it works as expected for existing rows. When I tab thru, or click to begin editing a new row, the validator does not fire when moving off the column. When move off the new row (with no data in the column) so that it commits, and then move back to the row, now the validator works...but ONLY if I put some data in the editor, and then delete it.

In other words, for new rows, the requiredFieldValidator does not do anything until I actually type something in the column. If I leave a column blank it never fires, defeating the purpose of it. Interestingly, the example they provide (http://mleibman.github.com/SlickGrid/examples/example3-editing.html) exhibits the same problem.

New row in slickgrid, Validator does not fire

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经为我的一列配置了requiredFieldValidator，它对现有行的工作与预期一样。当我按tab键浏览或单击开始编辑新行时，当移出列时验证器不会触发。当移出新行(列中没有数据)，使其提交，然后移回该行时，现在验证器works...but仅当我在编辑器中放入一些数据，然后删除它。换句话说，对于新行，在我实际在...

问slickgrid中的新行，验证器不会触发
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