{ return `${Math.max(0, Number(value))}`; // 确保始终非负,并转换为数值后显示 }, parseNumber(value) { const num = parseInt(value, 10); // 解析为整数 if (isNaN(num) || num < 0) { return ''; // 如果不是数字或小于0,则返回空字符串 } return num; }, }, }; </...
isNumber(Infinity); // false isNumber(NaN); // false isNumber(null); // false isNumber(undefined); // false isNumber(''); // false isNumber(' '); // false isNumber('foo'); // false isNumber([1]); // false isNumber([]); // false isNumber(function () {}); // false ...
Determine whether input is NaN (Not-a-Number) C Syntax #include "matrix.h" bool mxIsNaN(double value); Fortran Syntax #include "fintrf.h" integer*4 mxIsNaN(value) real*8 value Arguments value Double-precision, floating-point number to test ...
isNaN(currentValue)) { return ''; if (!currentValue && currentValue !== 0) { return null; } if (isNumber(currentValue)) { // todo 小数精度 确认是否应该以正则处理 @@ -111,17 +110,16 @@ export function useEvent(props: InputNumberProps, ctx: SetupContext, inputRef: R }; const ...
<input onkeyup="if(isNaN(value))execCommand('undo')" onafterpaste="if(isNaN(value))execCommand('undo')"><input name=txt1 onchange="if(/D/.test(this.value)){alert('只能输入数字');this.value='';}"> 3,数字和小数点方法二 代码如下:<input type=text t_value="" o_value="" onkeypress...
if(parseInt(value) < 0 || isNaN(value)) return 0; else if(parseInt(value) > 70) return 70; else return value; } </script> </head> <body> <input type="text" id="txtnumbers" maxlength="2" onkeyup="this.value = minmax(this.value, 0, 70)"/> ...
isNaN(numberValue)) { el.value = numberValue.toLocaleString('zh', { minimumFractionDigits: 2, maximumFractionDigits: 2, }) } // 聚焦时转化为数字格式(去除千分位) el.onfocus = () => { el.value = parseFloat(el.value.replace(/,/g, '')).toFixed(2) } // 失去焦点时转化为千分位 ...
if(isNaN(me.value)) { me.value=""; } } </script> </head> <body> <br/> <input onkeyup="keyup(this);"/> </body> </html> modify code for ur purpose. Happy Coding. Mark as Answer if it helps. Monday, May 17, 2010 12:41 AM u can make use of range validator as below ...
return isNaN(n) ? val : n;} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <div id="app"> 当input的type=number时，当输⼊的数据有两个⼩数点的时候，⽐如1.1.1，此时获取不到this.msg的值 <input type="numbe...
isNaN ? NaN : Number(newValueStr) : Number(newValueStr), reason ); } }; @@ -158,7 +159,7 @@ function InputNumber(baseProps: InputNumberProps, ref) { // Don't correct the illegal value caused by prop value. Wait for user to take actions. if (_isOutOfRange && refHasOperate...