js控制只能输入数字和逗号的正则表达式怎么写？ input 输入框只能输入数字和逗号，用正则表达式怎么写
\u5982\u4f55\u7528js\u63a7\u5236\u6587\u672c\u6846\u53ea\u80fd\u8f93\u5165\u6570\u5b57\u548c\u9017\u53f7\u7ec4\u6210\u7684\u5b57\u7b26\u4e32\uff1f\u63d0\u4f9b\u51e0\u4e2a\u601d\u8def\uff1a
1. \u7528HTML5\u4e2dinput\u7684pattern\u5c5e\u6027\uff0c\u4ed6\u662f\u6307\u5b9a\u4e00\u4e2a\u6b63\u5219\u8868\u8fbe\u5f0f\uff0c\u8f93\u5165\u7684\u5185\u5bb9\u5fc5\u987b\u7b26\u5408\u3002\u50cf\u8fd9\u79cd\u683c\u5f0f\uff0c\u7528\u300c(\d+,)+\d+\u300d\u8fd9\u6837\u7684\u6b63\u5219\u5c31\u884c\u3002\u7f3a\u70b9\u662fSafari\u548cIE10\u4ee5\u4e0b\u4e0d\u652f\u6301\u3002
2. input\u7684onchange\u4e8b\u4ef6\uff0c\u6bcf\u6b21\u90fd\u83b7\u53d6\u5b57\u7b26\u4e32\uff0c\u53d6\u91cc\u9762\u7684\u6bcf\u4e2a\u5b57\u7b26\uff0c\u5224\u65ad\u662f\u5426\u4e3a\u6570\u5b57\u6216\u9017\u53f7\u3002
3. input\u7684onkeyup/ onkeydown\u4e8b\u4ef6\uff0c\u6bcf\u6b21\u6309\u952e\u5c31\u89e6\u53d1\uff0c\u5224\u65ad\u6309\u952e\u4ee3\u7801\u662f\u5426\u4e3a\u6570\u5b57\u952e\u6216\u9017\u53f7\u952e\u3002\u7f3a\u70b9\u662f\u6309\u6570\u5b57\u952e\u4e0d\u4e00\u5b9a\u8f93\u5165\u6570\u5b57\uff0c\u8fd8\u9700\u8981\u4e00\u5757\u5224\u65ad\u662f\u5426\u6309\u4e0bshift\u7b49\u3002
\u8fd8\u662f2\u597d\u4e00\u70b9\u3002
function IsNum(e) {
var key = window.event ? e.keyCode : e.which;
var keychar = String.fromCharCode(key);
reg = /[^0-,]/g;
var result = reg.test(keychar);
if(result)
{
// el.className = "warn";
return false;
}
else
{
// el.className = "";
return true;
}
}
需要准备的材料分别有：电脑、html编辑器、浏览器。
1、首先，打开html编辑器，新建html文件，例如：index.html。
2、在index.html中的<script>标签，输入js代码：。
var reg = /^[0-9,]*$/;
var a = '1231,456,346,', b = '34sda';
test(a);test(b);
function test(text) {
if (reg.test(text)) {
$('body').append(text + '符合</br>');
} else {
$('body').append(text + '不符合</br>');
}
}
3、浏览器运行index.html页面，此时会打印出该正则表达式对“1231,456,346,”和“34sda
”的校验结果。
楼主您好，正则式如下：
变量=/^[\d\,]\d*\,*$/
var reg = /^[0-9,]+$/;
var txt = $("#id").html();
alert(reg.text(txt));
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