调用的时候使用 onkeydown="return functionName(this,event.keyCode)"
禁止使用粘贴功能 onpaste = "return false;"
浮点型
[html]
//只能输入浮点型
function PositiveDoble(element, keyCode)
{
if (keyCode == 9 || keyCode == 116 || (keyCode >= 35 && keyCode <= 40))
{
return true;
}
if ($(element).val().length >= 1 && $(element).val() != "-" && $(element).val().toString().lastIndexOf(".") < 0 && keyCode == 110) {
return true;
}
//输入00
if ($(element).val().length == 1 && $(element).val()=="0" && (keyCode == 96 || keyCode == 48)) {
return false;
}
//输入-0
if ($(element).val().length == 2 && $(element).val() == "-0" && (keyCode == 96 || keyCode == 48)) {
return false;
}
if ($(element).val().length == 0 && (keyCode == 189 || keyCode == 109)) {
return true;
}
if ($(element).val().length == 0 && (keyCode == 96 || keyCode == 48)) {
return true;
}
return (keyCode >= 96 && keyCode <= 105 || keyCode == 8 || (keyCode >= 48 && keyCode <= 57));
}
[html]
//只能输入正整数
function PositiveInteger(element, keyCode) {
if (keyCode == 9 || keyCode == 116 || (keyCode >= 35 && keyCode <= 40)) {
return true;
}
if ($(element).val().length == 0 && (keyCode == 96 || keyCode==48))
{
return false;
}
return (keyCode >= 96 && keyCode <= 105 || keyCode == 8 || (keyCode >= 48 && keyCode <= 57));
}
[html]
//只能输入英文+空格
function PositiveEnglish(keyCode)
{
if (keyCode == 9 || keyCode == 116 || (keyCode >= 35 && keyCode <= 40)) {
return true;
}
return ((keyCode >= 65 && keyCode <= 90) || keyCode == 32 || keyCode==8);
}
[html]
//带负号的
整数function PositiveInteger2(element, keyCode) {
if ($(element).val().length == 1 && $(element).val() != "-" && $(element).val() != "0" && (keyCode == 96 || keyCode == 48)) {
return true;
}
if (keyCode == 9 || keyCode == 116 || (keyCode >= 35 && keyCode <= 40)) {
return true;
}
if ($(element).val().length == 0 && (keyCode == 189 || keyCode == 109)) {
return true;
}
if ($(element).val().length == 0 && (keyCode == 96 || keyCode == 48)) {
return true;
}
if ($(element).val().length == 1 && (keyCode == 96 || keyCode == 48)) {
return false;
}
return (keyCode >= 96 && keyCode <= 105 || keyCode == 8 || (keyCode >= 48 && keyCode <= 57));
}
中文这里 使用 keypup="functionname(this)"
[html]
//只能输入中文
function PositiveChina(element) {
$(element).val($(element).val().replace(/[^\u4e00-\u9fa5]/g, ''));
}
