用 JQuery/Javascript 替换字符串中的所有逗号
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Replace all commas in a string with JQuery/Javascript
提问by duckmike
I have a form where I have a couple hundred text boxes and I'd like to remove any commas when they are loaded and prevent commas from being entered. Shouldn't the follow code work assuming the selector is correct?
我有一个表单，其中有几百个文本框，我想在加载它们时删除所有逗号并防止输入逗号。假设选择器是正确的，下面的代码不应该工作吗？
$(document).ready(function () {
$("input[id*=_tb]")
.each(function () {
this.value.replace(",", "")
})
.onkeyup(function () {
this.value.replace(",", "")
})
});
回答by totallyNotLizards
$(function(){
$("input[id*=_tb]").each(function(){
this.value=this.value.replace(/,/g, "");
}).on('keyup', function(){
this.value=this.value.replace(/,/g, "");
});
});
See here for an explanation and examples of the javascript string.replace()function:
有关 javascriptstring.replace()函数的说明和示例，请参见此处：
http://davidwalsh.name/javascript-replace
http://davidwalsh.name/javascript-replace
as @Vega said, this doesn't write the new value back to the textbox - I updated the code to do so.
正如@Vega 所说，这不会将新值写回文本框 - 我更新了代码来这样做。
回答by sp00m
Use a regex with the gflag instead of a string: .replace(/,/g, "").
使用带有g标志的正则表达式而不是字符串：.replace(/,/g, "")。
回答by Selvakumar Arumugam
Your code looks right except that it is not setting the value back to the input field,
您的代码看起来正确，只是它没有将值设置回输入字段，
$(document).ready(function () {
$("input[id*=_tb]")
.each(function () {
this.value = this.value.replace(/,/g, "")
})
.onkeyup(function () {
this.value = this.value.replace(/,/g, "")
})
});
Edit:Used regex
编辑：使用正则表达式
