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Home Web Front-end JS Tutorial Commonly used form code sharing in JavaScript (Collection)

Commonly used form code sharing in JavaScript (Collection)

黄舟
黄舟
Jul 24, 2017 am 10:12 AM
form javascript js

Mobile phone (text box): 


<input type="text" name="" maxlength="11" placeholder="" autocomplete="off">
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Basic form validation　


<script>$(function(){
    $(&#39;.fr-form&#39;).submit(function(event){
        event.preventDefault();//阻止表单提交事件        
        $(this).find(&#39;.error-tip&#39;).html(&#39;&#39;);        
        var name = $(&#39;.username&#39;);        
        var mobile = $(&#39;.mobile&#39;);        
        var regTest = /^1[3|4|5|7|8][0-9]{1}[0-9]{8}$|15[0-9]{1}[0-9]{8}$|18[0-9]{1}[0-9]{8}$/;        
        if(!name.val().length || name.val() == name.attr(&#39;data-value&#39;) ){alert(&#39;请填写姓名&#39;);return false;}        
        if(!mobile.val().length || mobile.val() == mobile.attr(&#39;data-value&#39;) ){alert(&#39;请填写电话&#39;);return false;}        
        if(!regTest.test( mobile.val() )){alert(&#39;电话格式不对&#39;);return false;}
        $.ajax({
            url:&#39;/signup&#39;,
            type:&#39;POST&#39;,
            data:&#39;realname=&#39;+name+&#39;&mobile=&#39;+mobile+&#39;&source=39&#39;,
            dataType:&#39;json&#39;,
            success:function(data){                if(data.status == 1){
                    alert(data.msg);
                }else{
                    alert(&#39;提交成功&#39;);
                }
            }
        })        return false;
    });
});
</script>
<form method="post" action="" class="fr-form">
<input type="text" class="input username" data-value="您的称呼" value="">
<input type="text" class="input mobile" data-value="您的电话" value="">
<p class="error-tip"></p><input type="submit" class="frformbtn" value="免费申请">
</form>
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checkbox (checkbox) value


<script src=" 
</script>
<script type="text/javascript">$(function(){
    $("#form").submit(function(){//表单提交:复选框取值
        //var checkboxs = $(&#39;input[type="checkbox"]:checked&#39;);
        var checkboxs = $(&#39;input[type="checkbox"][name="test"]:checked&#39;);        
        var checkboxs = $(&#39;input:checkbox[name="test"]:checked&#39;);
        console.log("长度: "+checkboxs.length);
        checkboxs.each(function(){            
        var s=$(this).val();
            console.log(s);
        });
        console.log("------------");        
        var checkboxs=$(&#39;input:checkbox[name="test"]:checked&#39;);        
        for(i=0;i<checkboxs.length;i++){
            console.log( $(checkboxs[i]).val());
        }        return false;
    });
});</script><form method="post" action="" id="form">
    <input type="checkbox" name="test" value="1">
    <input type="checkbox" name="test" value="2">
    <input type="checkbox" name="test" value="3">
    <input type="checkbox" name="test" value="4">
    <input type="checkbox" name="test" value="5">
    <input type="submit">
    <input type="reset"></form>
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radio (radio button) value


<script src=" 
</script>
<script type="text/javascript">$(function(){
    $("#form").submit(function(){//表单提交：单选框取值
        var aaa=$(&#39;input:radio[name="aaa"]:checked&#39;).val();
        alert(aaa);        
        return false;
    });
});</script><form method="post" action="" id="form">
    <input type="radio" name="aaa" value="1" checked>
    <input type="radio" name="aaa" value="2">
    <input type="radio" name="aaa" value="3">
    <input type="submit"></form>
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checkbox select all (native js)


<script src=" 
</script>
<script type="text/javascript">$(function(){
    $("#check_all").click(function(){            
    var a=$(this)[0].checked;            
    //alert( typeof a);
            var inputs = document.getElementsByTagName("input");            
            for(var i=0; i< inputs.length; i++){                
            if(inputs[i].type == "checkbox"){
                    inputs[i].checked = a; 
                }
            }
    });
});
</script>
<input type="checkbox" name="" id="check_all">选择所有<hr>
<input type="checkbox" name="">
<br>
<input type="checkbox" name="">
<br>
<input type="checkbox" name="">
<br>
<input type="checkbox" name="">
<br>
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checkbox Select all (jquery)


<script type="text/javascript" src=" 
</script>
<script type="text/javascript">$(function(){
    $("#check_all").click(function(){        
    if($(this).is(":checked")){
            $("input[name=aa]").prop("checked", true);
        }else{
            $("input[name=aa]").prop("checked", false);
        }
    });
});
</script>
<input type="checkbox" name="" id="check_all">选择所有<hr>
<input type="checkbox" name="aa">
<br>
<input type="checkbox" name="aa">
<br>
<input type="checkbox" name="aa">
<br>
<input type="checkbox" name="aa">
<br>
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checkbox Check yourself and Check boxes for all subordinate subdirectories: .prop("checked",true); 　2015-12-1


<script type="text/javascript" src=" 
</script>
<script type="text/javascript">$(function(){
    $("input[type=checkbox]").click(function(){        
    var s=$(this)[0].checked;
        $(this).parent().find("input[type=checkbox]").prop("checked",s);
    });
});</script><ul>
    <li><input type="checkbox" name="">
        <ul>
            <li><input type="checkbox" name=""></li>
            <li><input type="checkbox" name=""></li>

            <li><input type="checkbox" name="">
                <ul>
                    <li><input type="checkbox" name=""></li>
                    <li><input type="checkbox" name=""></li>
                    <li><input type="checkbox" name=""></li>
                </ul>
            </li>
        </ul>
    </li>
    <li><input type="checkbox" name=""></li>
    <li><input type="checkbox" name="">
        <ul>
            <li><input type="checkbox" name=""></li>
            <li><input type="checkbox" name=""></li>
            <li><input type="checkbox" name=""></li>
        </ul>
    </li></ul>
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A common effect of the text box:

When it is in the "focus" state, it is dark text. After the mouse is moved away, the text changes to light color.

When the text box is not filled in (or empty), a prompt message is displayed. After it has been filled in, the text color becomes darker and the prompt message is removed. 


<script type="text/javascript" src=" 
</script>
<script type="text/javascript">$(function(){
    $(".input").blur(function(){        
    var _defalut = $(this)[0].defaultValue;        
    var _value = $(this).val();        
    if(_value==_defalut || _value ==""){
            $(this).val(_defalut);
            $(this).removeClass("cGray");
        }else{
            $(this).addClass("cGray");
        }
    });
    $(".user-container .input").focus(function(){        
    var _defalut = $(this)[0].defaultValue;        
    var _value = $(this).val();        
    if(_value==_defalut){
            $(this).val("");
        }
    });
});
</script>
<ul>
<li>
<input type="text" name="" class="input" value="手机号码 （填写手机号）">
</li>
<li>
<input type="text" name="" class="input" value="密码 （6-16位数字、字母）">
</li>
</ul>
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textarea：

Multi-line text box form validation: 2016-5-3


<script type="text/javascript" src=" 
</script>
<script type="text/javascript">$(function(){    
//表单提交（实际是表单不提交，发ajax）    
$(&#39;.questions-form&#39;).submit(function() {
        event.preventDefault();//阻止表单提交事件
        var _textarea = $(&#39;.questions-form&#39;).find(&#39;textarea&#39;);        
        var _str = $.trim(_textarea.val());        
        var _len = _str.replace(/[^\x00-\xff]/g, &#39;__&#39;).length;        
        if (_textarea.attr(&#39;data-value&#39;) == _str) {alert(&#39;请填写内容&#39;);return false;}        
        if (_len < 10) {alert(&#39;内容过短，长度应在10-500个字之间&#39;);return false;}        
        if (_len > 500) {alert(&#39;内容超长了，长度在10-500个字之间，现在已 &#39; + _len + &#39; 个英文字符长度&#39;);return false;}        
        //ajax..
        return false;
    });
});</script>
<form method="post" class="questions-form">
    <textarea name="" rows="6" cols="50"></textarea>
    <input type="submit" value="提交" class=""></form>
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Calculate the character length of the text box (1 Chinese character counts as 2 English characters) 2016-1-15


<script type="text/javascript" src=" 
</script>
<script type="text/javascript">$(function(){
    $("#textarea").blur(function(){        
    var strLen = $(this).val().replace(/[^\x00-\xff]/g,&#39;__&#39;).length;
        alert(strLen);
    });
});</script>
<textarea id="textarea" rows="5" cols="66">
</textarea>
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