js表单判断函数代码大全

《js表单判断函数代码大全》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、JS表单判断函数代码大全JS表单判断函数代码大全}returntrue;}//验证负数值functionCheckNegative(val,min,max,mode){if((mode==0)&&(val.value=="")){returntrue;}if(!CheckNumber(val,min,max,mode)){val.focus();val.select();returnfalse;}if(parseInt(val.value)>=0){alert("数据必须为有效的负整数。");val.focus();

2、val.select();returnfalse;}returntrue;}//验证浮点数值functionCheckFloat(val,min,max,mode){if((mode==0)&&(val.value=="")){returntrue;}varlen=val.value.length;if(len

3、

4、len>max){alert("请输入正确的浮点数值。");val.focus();val.select();returnfalse;}varval2=val.value;for(i=1;i

5、2.length;i++){varch=val2.charAt(i);if((ch<"0"

6、

7、ch>"9")){if(ch!="."){alert("请输入正确的浮点数值。");val.focus();val.select();returnfalse;}}}if(isNaN(val2)){alert("请输入正确的浮点数值。");val.focus();val.select();returnfalse;}elseif(val2.indexOf('0')==0&&val2.indexOf('.')!=1){alert(

8、"请输入正确的有效浮点数值。");val.focus();val.select();returnfalse;}elseif(val2.indexOf('-')==0&&val2.indexOf('0')==1&&val2.indexOf('.')!=2){alert("请输入正确的有效浮点数值。");val.focus();val.select();returnfalse;}elseif(val2.indexOf('-')==0&&val2.indexOf('.')==1){alert("请输入正确的有效浮点数值。"

9、);val.focus();val.select();returnfalse;}elseif(val2.indexOf('.')==0){alert("请输入正确的有效浮点数值。");val.focus();val.select();returnfalse;}returntrue;}//验证文件路径functionCheckPath(val,mode){if((mode==0)&&(val.value=="")){returntrue;}varval2=val.value;if(val2.indexOf(':\')

10、>0){varisNot="!@#$^*()'`~

11、]}[{;.>,0){alert("请输入正确的文件路径。");val.focus();val.select();returnfalse;}else{for(vari=0;i

12、val.select();returnfalse;}}}}}else{alert("请输入正确的文件路径。");val.focus();val.select();returnfalse;}returntrue;}//验证URLfunctionCheckURL(val,mode){if((mode==0)&&(val.value=="")){returntrue;}varval2=val.value;if(val2.indexOf('://')>0){varisNot="!@$^*()'`~

13、]}[{;.>,<";if

14、(val2.indexOf('"')>0){alert("请输入正确的URL。");val.focus();val.select();returnfalse;}else{for(vari=0;i