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  • 用JS添加文本框案例代码

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>用JS添加文本框案例代码</title>
    </head>
    
    <body>
        <form id="t">
            <table id="table">
            <tr></td><input type="text" value="1" /></td></tr>
            <table>
            <input type="button" id="btn" value="提交" />
            <input type="button" id="new" value="新增" />
        </form>
        <script>
            document.getElementById('new').onclick = function(){
                var input = document.createElement('input');
                var tr = document.createElement('tr');
                var td = document.createElement('td');
                td.appendChild(input);
                tr.appendChild(td);
                document.getElementById('table').appendChild(tr);
            };
            document.getElementById('btn').onclick = function(){
                var inps = document.getElementsByTagName('input'),
                len = inps.length,count = 0,arr = [];
    
                for(var i = 0; i < len; i++){
                    if(inps[i].type == 'text'){
                        arr.push(inps[i]);
                    }
                }
    
                for(var i = 0; i < arr.length; i++){
                    if(inps[i].value != ''){
                        count++;
                    }else{
                        count--;
                    }
                }
    
                if(count == arr.length){
                    alert('提交')
                    document.getElementById('t').submit();
                }else{
                    alert('有空值')
                }
            };
        </script>
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/qingsong/p/5389487.html
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