如何从后面的代码将 bool 传递给 JavaScript 函数？
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How to pass a bool to a JavaScript function from code behind?
提问by GLP
I have a JavaScript function as follows:
我有一个 JavaScript 函数，如下所示：
function A(bNeed)
{
if (bNeed){
...
}
else{
...
}
}
In my code behind, in Page_Load, I have
在我后面的代码中Page_Load，我有
bool bNeed = File.Exists(...);
btn.Attributes.Add("onclick", string.Format("return A('{0}');", bNeed));
But it doesn't seem to work correctly. Can anyone tell me what is wrong?
但它似乎不能正常工作。谁能告诉我出了什么问题？
回答by Michael Liu
You are passing capitalized 'True'and 'False'as quoted strings, but the JavaScript Boolean literals are lowercase trueand falsewithout quotes. Change it to:
你逝去的资本'True'和'False'引字符串，但JavaScript的布尔文字都是小写true和false不带引号。将其更改为：
btn.Attributes.Add("onclick", string.Format("return A({0});", bNeed ? "true" : "false");
(If you prefer, you could write bNeed.ToString().ToLowerInvariant()instead of bNeed ? "true" : "false"because Boolean.ToString()returns "True"and "False".)
（如果你愿意，你可以写bNeed.ToString().ToLowerInvariant()而不是bNeed ? "true" : "false"因为Boolean.ToString()返回"True"和"False"。）
