Question

我想使用css为必填字段创建一个警告消息框，它应该是这样的 -

到目前为止，我已经实现了这样的目标 - https://jsfiddle.net/payalsuthar/352k4ope/ 这是我的HTML代码 -

Name:<input type="text" placeholder="name" id="name"><br>
<div id="errname"><p id="sym">!</p>Please fill out this field.</div>

Address:<textarea></textarea>
<input type="submit" value="submit" />

这是我的css -

#errname{
  border:1px solid orange;
  border-radius:4px;
  width:250px;
  margin-top=100px;
  background-color:white;
  font-size:15px;
  padding:10px;
}
#sym{
  width:18px;
  text-align:center;
  background-color:darkorange;
  color:white;
  font-weight:bold;
  font-size:14px;
  border:1px solid white;
}

但我希望它与上面的图像完全一样，我不介意它是否与下一个字段重叠，它应该出现在与上图相同的位置。我知道这是html必需的字段验证器消息框但它不适合我，所以我创建一个完全一样的。提前谢谢。

Answer 1

我想，你要求CSS帮助。而不是使用p标记尝试使用span跟随CSS

#sym {
background-color: darkorange;
color: white;
font-weight: bold;
font-size: 14px;
border: 1px solid white;
padding: 2px 5px 2px 5px;
margin-right: 8px;
}

修改

我使用了Srikanth Reddy的答案中的CSS，这是你更新的jsfiddle。 https://jsfiddle.net/352k4ope/3/

修改2

在白色三角形周围添加了橙色边框。 https://jsfiddle.net/352k4ope/5/

Answer 2

这里的解决方案......

的CSS

.input-block {
  position: relative;
}
.error-block {
  position: absolute;
  top: 100%;
  left: 50px;
  border:1px solid orange;
  border-radius:4px;
  width:250px;
  background-color:white;
  font-size:14px;
  padding:10px;
}
.error-block::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 20px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px;
  border-color: transparent transparent orange;
}
.error-icon {
  width:18px;
  text-align:center;
  background-color:darkorange;
  color:white;
  font-weight:bold;
  font-size:14px;
}

HTML

<div class="input-block">
  Name:<input type="text" placeholder="name" id="name">
  <div class="error-block"><span class="error-icon">!</span>Please fill out this field.</div>
</div>

Answer 3

试试这个：

HTML：

<form>
    <ul class="errorMessages"></ul>

    <div>
        <label for="name">Name:</label>
        <input id="name" type="text" required>
    </div>

    <div>
        <label for="comments">Address:</label>
        <textarea id="comments" required></textarea>
    </div>

    <div class="buttons">
        <button>Submit</button>
    </div>
</form>

Jquery的

 var createAllErrors = function() {
            var form = $( this ),
                errorList = $( "ul.errorMessages", form );

            var showAllErrorMessages = function() {
                errorList.empty();

                // Find all invalid fields within the form.
                var invalidFields = form.find( ":invalid" ).each( function( index, node ) {

                    // Find the field's corresponding label
                    var label = $( "label[for=" + node.id + "] "),
                        // Opera incorrectly does not fill the validationMessage property.
                        message = node.validationMessage || 'Invalid value.';

                    errorList
                        .show()
                        .append( "<li><span>" + label.html() + "</span> " + message + "</li>" );
                });
            };

            // Support Safari
            form.on( "submit", function( event ) {
                if ( this.checkValidity && !this.checkValidity() ) {
                    $( this ).find( ":invalid" ).first().focus();
                    event.preventDefault();
                }
            });

            $( "input[type=submit], button:not([type=button])", form )
                .on( "click", showAllErrorMessages);

            $( "input", form ).on( "keypress", function( event ) {
                var type = $( this ).attr( "type" );
                if ( /date|email|month|number|search|tel|text|time|url|week/.test ( type )
                  && event.keyCode == 13 ) {
                    showAllErrorMessages();
                }
            });
        };

        $( "form" ).each( createAllErrors );

DEMO HERE

Answer 4

试试这个https://jsfiddle.net/352k4ope/4/

#name {
  position: relative;
}

#name::before {
  position: absolute;
  top: 20px;
  left: 60px;
  content: '';
  display: block;
  width: 0; 
  height: 0; 
  line-height: 0;
  font-size: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;

  border-bottom: 10px solid white;
}

#name::after {
  content: url('http://67.media.tumblr.com/fdeec9480199afb3c6ed9c24b2aec9c5/tumblr_oaayc9r25Z1vaudwko1_75sq.png')'  Please fill out this field.';
  font-family: arial;
  font-size: 14px;
  line-height: 50px;
  padding: 0 10px;
  vertical-align: top;
  width: 170px;
  height: 50px;
  position: absolute;
  background-color: white;
  top: 30px;
  left: 50px;
}

使用css创建警告消息框

4 个答案: