106 lines
2.8 KiB
Markdown
106 lines
2.8 KiB
Markdown
---
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title: 编辑框数据有效性判断
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updated: 2022-03-14 07:46:12Z
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created: 2022-01-17 02:27:09Z
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tags:
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- 数据筛选
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---
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数据有效性判断可分为两个部分，一是对单次输入的数字判断，滤除无效字符，二是输入完毕后对整个数据进行判断，如区间检查等
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# 过滤单个字符
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在输入时限制无效字符输入
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```js
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winform.plus.editBox.wndproc = function(hwnd,message,wParam,lParam){
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if(message == 0x102/*_WM_CHAR*/){//对输入字符进行约束，不能识别非eng输入法状态下的输入
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if(wParam >= '0'# and wParam <= '9'#){
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return ;
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}
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destr = wParam
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select(wParam) {
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case '-'# {
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if(min > 0){
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return 1;
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}
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if(tmp2){
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key.press(0x8/*_VK_BACK*/)
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}
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if(string.indexOf(ctrl.text,'-')){
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ctrl.text = string.trimleft(ctrl.text,"-")
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ctrl.setsel(tmp-1)
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return 1;
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}
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else {
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ctrl.text = string.concat("-",ctrl.text)
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ctrl.setsel(tmp+1)
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return 1;
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}
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}
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case 'e'#, 'E'# {
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if(!string.indexOf(ctrl.text,'E') and !string.indexOf(ctrl.text,'e')){
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return;
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}
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}
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case '.'# {
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if(!string.indexOf(ctrl.text,'.')){
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return ;
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}
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}
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case 'g'#, 'G'# {
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if(tmp2){
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key.press(0x8/*_VK_BACK*/)
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}
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if(ctrl.text != ""){
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ctrl.text = tonumber(ctrl.text) * 1e3
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ctrl.setsel(-1)
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}
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return 1;
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}
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case 'm'#, 'M'# {
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if(tmp2){
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key.press(0x8/*_VK_BACK*/)
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}
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if(ctrl.text != ""){
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ctrl.text = tonumber(ctrl.text) * 1e0
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ctrl.setsel(-1)
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}
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return 1;
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}
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case 'k'#, 'K'# {
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if(tmp2){
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key.press(0x8/*_VK_BACK*/)
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}
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if(ctrl.text != ""){
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ctrl.text = tonumber(ctrl.text) / 1e3
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ctrl.setsel(-1)
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}
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return 1;
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}
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case 0x11/*_VK_CTRL*/{
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if(!tmp2){
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var str = string.slice(ctrl.text,tmp,tmp2);
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if(#tonumber(str) == #str){
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//左侧数字+1
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}
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}
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}
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}
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return 1; //其余字符全部屏蔽
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}
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```
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# 检查单次数据
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在编辑框更新后判断上限有效性
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```js
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case 0x300/*_EN_CHANGE*/ {
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if(tonumber(owner.text) >= 1e3){//判断新数据范围
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owner.text = lstValue//无效时恢复最后一次有效数据
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owner.setsel(tmp)//恢复光标位置
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}
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lstValue = owner.text//更新最后一次有效数据
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}
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```
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在失去焦点后评断下限有效性
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#数据筛选 |