更新时间:2023-02-21 16:26:49
您好,
感谢您的回复,
我可以限制小数点数只允许2点,但是如何限制小数点前的数字不大于100?
代码是:
Hello,
Thanks for your reply,
I am able to restrict decimal poit numbers to allow only 2 points, but how can i restrict the number to be not greater than 100 before decimal point?
The code is:
// Allocation Percentage text-box allow numeric and allow 2 decimal points only
function extractNumber(obj, decimalPlaces, allowNegative) {
var temp = obj.value;
// avoid changing things if already formatted correctly
var reg0Str = '[0-9]*';
if (decimalPlaces > 0) {
reg0Str += '\[\,\.]?[0-9]{0,' + decimalPlaces + '}';
} else if (decimalPlaces < 0) {
reg0Str += '\[\,\.]?[0-9]*';
}
reg0Str = allowNegative ? '^-?' + reg0Str : '^' + reg0Str;
reg0Str = reg0Str + '
';
var reg0 = new RegExp(reg0Str);
if (reg0.test(temp)) return 真跨度>;
// 首先替换所有非数字
var reg1Str = ' [^ 0-9' + (decimalPlaces!= 0 ?' 。':' ')+(decimalPlaces!= 0 ?' ,':' ')+(allowNegative?' - ':' ')+ ' ]';
var reg1 = new RegExp(reg1Str, ' g');
temp = temp.replace(reg1,' ');
if (allowNegative){
// 替换额外的否定
var hasNegative = temp.length > 0 && temp.charAt( 0 )== ' - ';
var reg2 = / - / g;
temp = temp.replace(reg2,' ');
if (hasNegative)temp = ' - ' + temp;
}
if (decimalPlaces!= 0 ){
var reg3 = /[\,\\\]/g;
var reg3Array = reg3.exec(temp);
if (reg3Array!= null ){
// 仅保留第一次出现。
// 以及decimalPlaces指定的位数或整个字符串(如果decimalPlaces< 0
var reg3Right = temp.substring(reg3Array.index + reg3Array [ 0 。>]长度);
reg3Right = reg3Right.replace(reg3,' ');
reg3Right = decimalPlaces > 0 ? reg3Right.substring( 0 ,decimalPlaces):reg3Right;
temp = temp.substring( 0 ,reg3Array.index)+ ' 。' + reg3Right;
}
}
obj。 value = temp;
}
function blockNonNumbers(obj,e,allowDecimal,allowNegative){
var key;
var isCtrl = false ;
var keychar;
var reg;
if (window。 event ){
key = e.keyCode;
isCtrl = window。 event .ctrlKey
}
else if (e.which){
key = e.which;
isCtrl = e.ctrlKey;
}
if (isNaN(key)) return true ;
keychar = String .fromCharCode(key);
// 检查退格或删除,或按Ctrl键
if (key == 8 || isCtrl){
返回 true ;
}
reg = / \d /;
var isFirstN = allowNegative? keychar == ' - '&& obj。 value .indexOf(' - ')== -1: false ;
var isFirstD = allowDecimal? keychar == ' 。'&& obj。 value .indexOf(' 。')== -1: false ;
var isFirstC = allowDecimal? keychar == ' ,'&& obj。 value .indexOf(' ,')== -1: false ;
return isFirstN || isFirstD || isFirstC || reg.test(keychar);
}
function blockInvalid(obj){
var temp = obj。 value ;
if (temp == - ){
temp = ;
}
if (temp.indexOf( 。)== temp.length - 1 && temp.indexOf( 。)!= -1){
temp = temp + 00;
}
if (temp.indexOf( 。)== 0 ){
temp = 0 + temp;
}
if (temp.indexOf( 。)== 1 && temp.indexOf( - )== 0 ){
temp = temp.replace( - , - 0跨度>);
}
if (temp.indexOf( ,)== temp.length - 1 && temp.indexOf( ,)!= -1){
temp = temp + 00;
}
if (temp.indexOf( ,)== 0 ){
temp = 0 + temp;
}
if (temp.indexOf( ,)== 1 && temp.indexOf( - )== 0 ){
temp = temp.replace( - , - 0跨度>);
}
temp = temp.replace( ,, 。);
obj。 value = temp;
}
'; var reg0 = new RegExp(reg0Str); if (reg0.test(temp)) return true; // first replace all non numbers var reg1Str = '[^0-9' + (decimalPlaces != 0 ? '.' : '') + (decimalPlaces != 0 ? ',' : '') + (allowNegative ? '-' : '') + ']'; var reg1 = new RegExp(reg1Str, 'g'); temp = temp.replace(reg1, ''); if (allowNegative) { // replace extra negative var hasNegative = temp.length > 0 && temp.charAt(0) == '-'; var reg2 = /-/g; temp = temp.replace(reg2, ''); if (hasNegative) temp = '-' + temp; } if (decimalPlaces != 0) { var reg3 = /[\,\.]/g; var reg3Array = reg3.exec(temp); if (reg3Array != null) { // keep only first occurrence of . // and the number of places specified by decimalPlaces or the entire string if decimalPlaces < 0 var reg3Right = temp.substring(reg3Array.index + reg3Array[0].length); reg3Right = reg3Right.replace(reg3, ''); reg3Right = decimalPlaces > 0 ? reg3Right.substring(0, decimalPlaces) : reg3Right; temp = temp.substring(0, reg3Array.index) + '.' + reg3Right; } } obj.value = temp; } function blockNonNumbers(obj, e, allowDecimal, allowNegative) { var key; var isCtrl = false; var keychar; var reg; if (window.event) { key = e.keyCode; isCtrl = window.event.ctrlKey } else if (e.which) { key = e.which; isCtrl = e.ctrlKey; } if (isNaN(key)) return true; keychar = String.fromCharCode(key); // check for backspace or delete, or if Ctrl was pressed if (key == 8 || isCtrl) { return true; } reg = /\d/; var isFirstN = allowNegative ? keychar == '-' && obj.value.indexOf('-') == -1 : false; var isFirstD = allowDecimal ? keychar == '.' && obj.value.indexOf('.') == -1 : false; var isFirstC = allowDecimal ? keychar == ',' && obj.value.indexOf(',') == -1 : false; return isFirstN || isFirstD || isFirstC || reg.test(keychar); } function blockInvalid(obj) { var temp = obj.value; if (temp == "-") { temp = ""; } if (temp.indexOf(".") == temp.length - 1 && temp.indexOf(".") != -1) { temp = temp + "00"; } if (temp.indexOf(".") == 0) { temp = "0" + temp; } if (temp.indexOf(".") == 1 && temp.indexOf("-") == 0) { temp = temp.replace("-", "-0"); } if (temp.indexOf(",") == temp.length - 1 && temp.indexOf(",") != -1) { temp = temp + "00"; } if (temp.indexOf(",") == 0) { temp = "0" + temp; } if (temp.indexOf(",") == 1 && temp.indexOf("-") == 0) { temp = temp.replace("-", "-0"); } temp = temp.replace(",", "."); obj.value = temp; }
和来自Textbox的调用方法是:
and calling methods from Textbox is:
<asp:TextBox ID="txtAllocationPercentage" runat="server" CssClass="textbox" ToolTip="Enter Allocation Percentage"
onblur="extractNumber(this,2,true);blockInvalid(this);" onkeyup="extractNumber(this,2,true);"
onKeyPress="return blockNonNumbers(this, event, true, true);"></asp:TextBox>
请给我你的建议,我在哪里可以修改代码来检查不超过100的数字?
谢谢。
Please give me your suggestions, where can i modify the code to check the number not greater than 100?
Thanks.