常用的js

云代码 - javascript代码库

常用的js

2014-07-29 作者：云代码会员举报

[javascript]代码库

//  阻止网页上的右键操作

function Click() {

window.event.returnValue = false;

}

//document.oncontextmenu = Click;   //  阻止网页右键的脚本

//  阻止F5刷新键

function OverKey(){

if(116==event.keyCode){

event.keyCode=0;

event.returnValue = false;

}

}

document.onkeydown = OverKey;   //  阻止F5刷新键的脚本

document.onclick = OverKey; //  阻止F5刷新键的脚本

//  用正则表达式将前后空格替换成空字符串

String.prototype.trim = function trim() {

return this.replace(/(^\s*)|(\s*$)/g,"");

};

function removeSpace(obj) {

if(obj!=null)

obj.value = obj.value.trim();

return;

}

//  控制页面重复提交

//  mainForm:页面当前提交form；flag:true-不可操作、false-可操作

function repeatSubmitControl(mainForm,flag){

if(true==flag){

for(var i=0;i<mainForm.length;i++){

var tmpElement = mainForm.elements[i];

if(undefined==tmpElement.type)

continue;

if("submit"==tmpElement.type.toLowerCase() || "button"==tmpElement.type.toLowerCase())

tmpElement.disabled = true;

}

}

else if(false==flag){

for(var i=0;i<mainForm.length;i++){

var tmpElement = mainForm.elements[i];

if(undefined==tmpElement.type)

continue;

if("submit"==tmpElement.type.toLowerCase() || "button"==tmpElement.type.toLowerCase())

tmpElement.disabled = false;

}

}

}

//  提交交易请求

//  mainForm:页面当前提交form；actionName:访问交易名称

function submitTrs(mainForm,actionName) {

repeatSubmitControl(mainForm,true);

document.getElementById("errormsg").innerHTML = "交易正在处理中...";

mainForm.action = actionName;

mainForm.submit();

repeatSubmitControl(mainForm,false);

document.getElementById("errormsg").innerHTML = "";

}

//  检查是否为空

function checkIsEmpty(obj,message,areaname) {

var val = obj.value.trim();

if(val==null || val==''){

document.getElementById(areaname).innerHTML = message;

return true;

}

return false;

}

//  检查长度

function checkLength(obj,minlength,maxlength,message,areaname) {

var val = obj.value.trim();

if(val.length<minlength || val.length>maxlength){

document.getElementById(areaname).innerHTML = message;

return false;

}

return true;

}

//  控制只能输入英文、数字

function checkIsNumberOrLetter(obj) {

obj.value = obj.value.replace(/[^a-zA-Z0-9]/g,'');

return false;

}

//  控制只能输入数字

function checkIsNumber(obj) {

obj.value = obj.value.replace(/[^0-9]/g,'');

return false;

}

//  检查身份证格式

function checkIdNoStyle(obj,message,areaname) {

var idNo = obj.value.trim();

var pattern = /^(([0-9]{15})|([0-9]{17}[a-zA-Z0-9]{1}))$/;

if(!pattern.exec(idNo)){

document.getElementById(areaname).innerHTML = message;

return false;

}

return true;

}

//  检查电子邮件地址格式

function checkEmailStyle(obj,message,areaname) {

var email = obj.value.trim();

var pattern = /^([a-zA-Z0-9_\-]{1,}@[a-zA-Z0-9_\-]{1,}\.[a-zA-Z0-9_\-.]{1,})$/;

if(!pattern.exec(email)){

document.getElementById(areaname).innerHTML = message;

return false;

}

return true;

}

//  检查固定电话格式

function checkPhoneStyle(obj,message,areaname) {

var phone = obj.value.trim();

var pattern = /^((0[0-9]{2,4}\-)?([1-9][0-9]{5,7})+(\-[0-9]{1,4})?)$/;

if(!pattern.exec(phone)){

document.getElementById(areaname).innerHTML = message;

return false;

}

return true;

}

//  输入金额的显示格式化

function standMoney(inObject){

var inStr = inObject.value;

var outStr = "";

var charValue = "";

for(var i=0;i<inStr.length;i++){

charValue = inStr.charAt(i);

if(!(isNaN(parseInt(charValue,10))) || (charValue=='.') || (charValue==','))

outStr += charValue;

}

var valueArr = outStr.split(".");

if(valueArr.length>2){

outStr = valueArr[0] + "." + valueArr[1];

valueArr = outStr.split(".");

}

var dotValue;

var dotStr = ".";

if(valueArr.length==2){

dotValue = valueArr[1];

if(dotValue.length==0)

dotStr = dotStr + "";

else if(dotValue.length==1)

dotStr = dotStr + dotValue;

else

dotStr = dotStr + dotValue.substring(0,2);

}

else

dotStr = "";

var intArr = valueArr[0].split(",");

var intValue = "";

for(i=0;i<intArr.length;i++){

intValue += intArr[i];

}

var intStr = "";

while(intValue.length>3){

intStr = "," + intValue.substring(intValue.length-3,intValue.length) + intStr;

intValue = intValue.substring(0,intValue.length-3);

}

intStr = intValue + intStr;

outStr = intStr + dotStr;

inObject.value = outStr;

return;

}

//  输入的金额提交格式化

function lastMoney(inObject) {

var inStr = inObject.value;

var outStr;

var valueArr;

valueArr= inStr.split(".");

var dotStr,dotValue;

if(valueArr.length==2){

dotValue = valueArr[1];

if(dotValue.length==0){

dotStr = "00";

}

else {

if(dotValue.length==1)

dotStr = dotValue + "0";

else

dotStr = dotValue.substring(0,2);

}

}

else{

dotStr = "00";

}

var intArr;

intArr = valueArr[0].split(",");

var intValue;

intValue = "";

for(var i=0;i<intArr.length;i++) {

intValue+=intArr[i];

}

intStr = intValue;

if( intStr == "" || intStr == null)

intStr = "0";

outStr = intStr + "." + dotStr;

if( outStr == "" || outStr == null || outStr == ".00" || outStr == "0.00" || outStr == ".")

inObject.value = "";

else

inObject.value = outStr;

return true;

}