TextArea 控件的最大长度问题(js json)_表单特效

var 输入 = {

OnIntegerOnly: function() {
var k = System.isIE ?事件.keyCode : 事件.which;

if(event.ctrlKey || event.ctrlAlt || event.shiftKey) {
Inputs.DisableInput(event);
返回；
}

if ( ( k 57 )
&& 8 != k
&& 9 != k
&& 46 != k
&& 37 != k
&& 39 != k
&& 16 != k
&& 36 != k
&& 35 != k
&& 17 != k
&& 13 != k
&& ( k 105 )
) {
Inputs.DisableInput(event);
}

返回 k;
},

OnDecimalOnly: function() {
var k = System.isIE ?事件.keyCode : 事件.which;

if(event.ctrlKey || event.ctrlAlt || event.shiftKey) {
Inputs.DisableInput(event);
返回；
}

if( ( k 57 )
&& 8 != k
&& 9 != k
&& 46 != k
&& 37 != k
&& 39 != k
&& 16 != k
&& 36 != k
&& 35 != k
&& 17 != k
&& 13 != k
&& 190 != k
&& 110 != k
&& ( k 105 )
) {
Inputs.DisableInput(event) ;
}

返回 k;
},

OnAsciiOnly: function() {
var k = System.isIE ?事件.keyCode : 事件.which;

if ( ( k 122 )
&& ( k 90 )
&& ( k ) 57 )
&& 8 != k
&& 9 != k
&& 46 != k
&& 37 != k
&& 39 != k
&& 16 != k
&& 36 != k
&& 35 != k
&& 17 != k
&& 13 != k
&& 189 != k
&& 187 != k
) {
Inputs.DisableInput(event);
}

返回 k;
},

DisableInput: function(event) {
if(System.isIE)
event.returnValue = false;
其他
event.preventDefault();
},

AddOnPos: function(obj, charvalue) {
//obj代表要插入字符的输入框

//value代表要插入字符的输入框

obj.focus();
var r = document.selection.createRange();
var ctr = obj.createTextRange();
var i;
var s = obj.value;

//注释掉的这种方法只能用在单行的输入框输入内

//对多行输入框textarea无效
//r.setEndPoint("StartToStart" “，点击）；
//i = r.text.length;
//获取坐标位置----Start----
var ivalue = "&^asdjfls2FFFF325%$^&";
r.text = ivalue;
i = obj.value.indexOf(ivalue);
r.moveStart("字符", -ivalue.length);
r.text = "";
//获取到位置----End----
//插入字符
obj.value = s.substr(0,i) charvalue s.substr(i,s.length ）；
ctr.collapse(true);
ctr.moveStart("character", i charvalue.length);
ctr.select();
},

MaxLength: function() {
var _this = event.srcElement;
var iMaxLen = parseInt(_this.getAttribute('maxlength'));

switch(event.type) {
case 'beforepaste': {
event.returnValue = false;
} 休息；

case '粘贴': {
var iTxtLen = _this.value.lenUTF8();
var txtCbd = window.clipboardData.getData("Text");
var iCbdLen = txtCbd.lenUTF8();
if((iMaxLen - iTxtLen) var iSurplusLen = iMaxLen - iTxtLen;
var subStr = txtCbd.substr(0, iSurplusLen);
var insertStr = '';
for(var i = 0; i var chr = subStr.substr(i, 1);
if(iSurplusLen >= chr.lenUTF8()) {
insertStr = chr;
iSurplusLen -= chr.lenUTF8();
}
}

Inputs.AddOnPos(_this, insertStr);
//_this.style.backgroundColor = '红色';
//System.setTimeout(Inputs.ColorTips, 500, _this);
event.returnValue = false;
event.srcElement.style.imeMode = '已禁用';
} else {
event.returnValue = true;
event.srcElement.style.imeMode = 'auto';
}
} 休息；

case '按键': {
var iTxtLen = _this.value.lenUTF8();
if(iMaxLen while(_this.value.lenUTF8() > iMaxLen) {
_this.value = _this.value.substr(0, _this.value.length - 1）；
}
Inputs.DisableInput(event);
if('disabled' != event.srcElement.style.imeMode) {
event.srcElement.style.imeMode = 'disabled';
}
}
else {
if('auto' != event.srcElement.style.imeMode) {
event.srcElement.style.imeMode = 'auto';
}
}
} 休息；

case 'keyup': {
var k = System.isIE ?事件.keyCode : 事件.which;

if (8 != k
&& 9 != k
&& 46 != k
&& 37 != k
&& 39 != k
&& 16 ! = k
&& 36 != k
&& 35 != k
&& 17 != k
&& 13 != k
&& 189 != k
&& 187 != k
) {
if(_this.getAttribute) {
_this.fireEvent('onkeypress');
}
}
} 休息；

case 'keydown': {
var k = System.isIE ?事件.keyCode : 事件.which;

if (8 != k
&& 9 != k
&& 46 != k
&& 37 != k
&& 39 != k
&& 16 ! = k
&& 36 != k
&& 35 != k
&& 17 != k
&& 13 != k
&& 189 != k
&& 187 != k
) {
var iTxtLen = _this.value.lenUTF8();
if(iMaxLen Inputs.DisableInput(event);
}
}
} 休息；
}
},

TextAreaMaxLength: function() {

var aX = document.getElementsByTagName('textarea');
for(var i = 0; i if(aX[i].getAttribute('maxlength')) {
aX[i].detachEvent('onbeforepaste) ', 输入.MaxLength);
aX[i].detachEvent('onpaste', Inputs.MaxLength);
aX[i].detachEvent('onkeypress', Inputs.MaxLength);
aX[i].detachEvent('onkeyup', Inputs.MaxLength);
aX[i].detachEvent('onkeydown', Inputs.MaxLength);

aX[i].attachEvent('onbeforepaste', Inputs.MaxLength);
aX[i].attachEvent('onpaste', Inputs.MaxLength);
aX[i].attachEvent('onkeypress', Inputs.MaxLength);
aX[i].attachEvent('onkeyup', Inputs.MaxLength);
aX[i].attachEvent('onkeydown', Inputs.MaxLength);
/*
var res = 'zh-cn' == window.navigator.systemLanguage
? '最大长度：'
: '最大长度：';

if('' == aX[i].title) aX[i].title = res aX[i].getAttribute('maxlength');
*/
}
}
},

TextBoxMaxLength: function() {
var aX = document.getElementsByTagName('input');
for(var i = 0; i var maxLen = aX[i].getAttribute('maxlength');
if('text' == aX[i].type
&& null != maxLen
&& '' != maxLen
&& undefined != maxLen
&& 2147483647 > parseInt( maxLen)
&& '' == aX[i].title) {

aX[i].detachEvent('onbeforepaste', Inputs.MaxLength);
aX[i].detachEvent('onpaste', Inputs.MaxLength);
aX[i].detachEvent('onkeypress', Inputs.MaxLength);
aX[i].detachEvent('onkeyup', Inputs.MaxLength);

aX[i].attachEvent('onbeforepaste', Inputs.MaxLength);
aX[i].attachEvent('onpaste', Inputs.MaxLength);
aX[i].attachEvent('onkeypress', Inputs.MaxLength);
aX[i].attachEvent('onkeyup', Inputs.MaxLength);
/*
var res = 'zh-cn' == window.navigator.systemLanguage
? '最大长度：'
: '最大长度：';

aX[i].title = res aX[i].getAttribute('maxlength');
*/
}
}
}
}

Tools.Inputs = 输入；

window.attachEvent('onload', Tools.Inputs.TextAreaMaxLength);
window.attachEvent('onload', Tools.Inputs.TextBoxMaxLength);