Ihre jQuery-Eingabeaufforderungsbox (Tipp) plug-in_javascript-Kenntnisse

Das Plug-in kann die häufig verwendete Eingabeaufforderungsanzeige erfüllen, unterstützt 12 Richtungen, unterstützt die Anpassung von Rahmen, Hintergrundfarbe und Textfarbe und unterstützt die Feinabstimmung der Position, der Ebene, des Breitenabstands und anderer Parameteranpassungen.

Schauen wir uns zunächst die Wirkung an:

Tipps: Prompt-Informationskomponente
Parameter:

• msg:'asdf', Inhalt
  
• dire:2, Richtung
  
• B:250,Breite
  
• _x:0, seitlicher Versatz
  
• _y:0, vertikaler Versatz
  
• zIndex:100000,level
  
• borderColor:#FFF, Randfarbe
  
• bgColor:#FFF, Hintergrundfarbe
  
• useHover:true, ob die Hover-Anzeige verwendet werden soll
  
• Farbe: Standardfarbe für Eingabeaufforderungstext
  
• Auffüllung: Rand
  

Javascript-Code:

(function ($) {
  var defaults = {
    dire: 12,
    w: 250,
    _x: 0,
    _y: 0,
    borderColor: '#FFBB76',
    bgColor: '#FFFCEF',
    color: '#FF0000',
    padding: [5, 10],
    arrWidth: 10,
    useHover: true,
    zIndex: 100000
  };
  $.fn.tips = function (opt) {
    var tip, opts = $.extend({}, defaults, opt);
    if (this[0]) {
      opts.tag = this;
      if (opts.useHover) {
        opts.tag.hover(function () {
          tip = new Tip(opts);
          tip.show();
        }, function () {
          tip.close();
        });
      } else {
        tip = new Tip(opts);
        tip.show();
      }
      return this;
    }
  };
  function Tip(opts) {
    this.dire = opts.dire;
    this.width = opts.w;
    this.zIndex = opts.zIndex;
    this.borderColor = opts.borderColor;
    this.bgColor = opts.bgColor;
    this.color = opts.color;
    this.padding = opts.padding;
    this.arrWidth = opts.arrWidth;
    this.offsetX = opts._x;
    this.offsetY = opts._y;
    this.tag = opts.tag;
    this.msg = opts.msg;
    this.wrap = $('<div class="tip-wrap"></div>');
    this.innerArr = $('<div class="tip-arr-a"></div>');
    this.outerArr = $('<div class="tip-arr-b"></div>');
    this.init();
  };
  Tip.prototype = {
    init: function () {
      var msg = this.tag.data('tipMsg');
      if (!this.msg) {
        this.msg = msg;
      }
      this.createTemp();
    },
    createTemp: function () {
      var t = this;
      t.createWrap();
      t.setPosition();
    },
    createWrap: function () {
      var t = this;
      t.wrap.html(t.msg);
      var wrapCSS = {
        width: t.width,
        border: '1px solid ' + t.borderColor,
        'border-radius': '5px',
        background: t.bgColor,
        color: t.color,
        padding: t.getPadding()
      };
      t.outerArr.css(t.getArrStyle(t.dire, t.arrWidth, t.borderColor));
      t.innerArr.css(t.getArrStyle(t.dire, t.arrWidth, t.bgColor));
      t.wrap.prepend(t.innerArr).prepend(t.outerArr).css(wrapCSS);
      $('body').append(t.wrap);
    },
    setPosition: function () {
      var t = this;
      var posObj = t.getPos(t.dire, t.getPosition(t.tag), t.getPosition(t.wrap), t.arrWidth), pos = posObj.pos, innerPos = posObj.innerPos, outerPos = posObj.outerPos;
      t.wrap.css({top: pos.y, left: pos.x});
      t.innerArr.css({top: innerPos.y, left: innerPos.x});
      t.outerArr.css({top: outerPos.y, left: outerPos.x});
    },
    getPadding: function () {
      var t = this, pad = '0px', padArr = t.padding, len = padArr.length;
      switch (len) {
        case 1:
          pad = padArr[0] + 'px';
          break;
        case 2:
          pad = padArr[0] + 'px ' + padArr[1] + 'px';
          break;
        case 3:
          pad = padArr[0] + 'px ' + padArr[1] + 'px ' + padArr[2] + 'px';
          break;
        case 4:
          pad = padArr[0] + 'px ' + padArr[1] + 'px ' + padArr[2] + 'px ' + padArr[3] + 'px';
          break;
      }
      return pad;
    },
    getPosition: function (tag) {
      return {t: tag.offset().top, l: tag.offset().left, h: tag.outerHeight(), w: tag.outerWidth()};
    },
    getArrStyle: function (dir, width, color) {
      var style;
      switch (dir) {
        case 11:
        case 12:
        case 1:
          style = {
            'border-bottom-style': 'solid',
            'border-width': '0px ' + width + 'px ' + width + 'px',
            'border-bottom-color': color
          };
          break;
        case 2:
        case 3:
        case 4:
          style = {
            'border-left-style': 'solid',
            'border-width': width + 'px 0px ' + width + 'px ' + width + 'px',
            'border-left-color': color
          };
          break;
        case 5:
        case 6:
        case 7:
          style = {
            'border-top-style': 'solid',
            'border-width': width + 'px ' + width + 'px 0px',
            'border-top-color': color
          };
          break;
        case 8:
        case 9:
        case 10:
          style = {
            'border-right-style': 'solid',
            'border-width': width + 'px ' + width + 'px ' + width + 'px 0px',
            'border-right-color': color
          };
          break;
      }
      return style || {};
    },
    getPos: function (d, tagPos, pos, arrWidth) {
      var _pos, _innerPos, _outerPos, l = tagPos.l, t = tagPos.t, w = tagPos.w, h = tagPos.h, ww = pos.w, hh = pos.h;
      switch (d) {
        case 0:
        case 1:
          _pos = {x: l + w / 2 + arrWidth + 20 + 1 - ww, y: t + h + arrWidth};
          _outerPos = {x: ww - 2 - 20 - arrWidth * 2, y: -arrWidth};
          _innerPos = {x: ww - 2 - 20 - arrWidth * 2, y: -arrWidth + 1};
          break;
        case 2:
          _pos = {x: l - ww - arrWidth, y: t + h / 2 - arrWidth - 20 - 1};
          _outerPos = {x: ww - 2, y: 20};
          _innerPos = {x: ww - 2 - 1, y: 20};
          break;
        case 3:
          _pos = {x: l - ww - arrWidth, y: t + h / 2 - hh / 2};
          _outerPos = {x: ww - 2, y: (hh - 2) / 2 - arrWidth};
          _innerPos = {x: ww - 2 - 1, y: (hh - 2) / 2 - arrWidth};
          break;
        case 4:
          _pos = {x: l - ww - arrWidth, y: t + h / 2 + arrWidth + 20 + 1 - hh};
          _outerPos = {x: ww - 2, y: hh - 2 - 20 - arrWidth * 2};
          _innerPos = {x: ww - 2 - 1, y: hh - 2 - 20 - arrWidth * 2};
          break;
        case 5:
          _pos = {x: l + w / 2 + arrWidth + 20 + 1 - ww, y: t - arrWidth - hh};
          _outerPos = {x: ww - 2 - 20 - arrWidth * 2, y: hh - 2};
          _innerPos = {x: ww - 2 - 20 - arrWidth * 2, y: hh - 2 - 1};
          break;
        case 6:
          _pos = {x: l + w / 2 - ww / 2, y: t - arrWidth - hh};
          _outerPos = {x: (ww - 2) / 2 - arrWidth, y: hh - 2};
          _innerPos = {x: (ww - 2) / 2 - arrWidth, y: hh - 2 - 1};
          break;
        case 7:
          _pos = {x: l + w / 2 - 20 - arrWidth, y: t - arrWidth - hh};
          _outerPos = {x: 20, y: hh - 2};
          _innerPos = {x: 20, y: hh - 2 - 1};
          break;
        case 8:
          _pos = {x: l + w + arrWidth, y: t + h / 2 + arrWidth + 20 + 1 - hh};
          _outerPos = {x: -arrWidth, y: hh - 2 - 20 - arrWidth * 2};
          _innerPos = {x: -arrWidth + 1, y: hh - 2 - 20 - arrWidth * 2};
          break;
        case 9:
          _pos = {x: l + w + arrWidth, y: t + h / 2 - hh / 2};
          _outerPos = {x: -arrWidth, y: (hh - 2) / 2 - arrWidth};
          _innerPos = {x: -arrWidth + 1, y: (hh - 2) / 2 - arrWidth};
          break;
        case 10:
          _pos = {x: l + w + arrWidth, y: t + h / 2 - arrWidth - 20 - 1};
          _outerPos = {x: -arrWidth, y: 20};
          _innerPos = {x: -arrWidth + 1, y: 20};
          break;
        case 11:
          _pos = {x: l + w / 2 - 20 - arrWidth, y: t + h + arrWidth};
          _outerPos = {x: 20, y: -arrWidth};
          _innerPos = {x: 20, y: -arrWidth + 1};
          break;
        case 12:
          _pos = {x: l + w / 2 - ww / 2, y: t + h + arrWidth};
          _outerPos = {x: (ww - 2) / 2 - arrWidth, y: -arrWidth};
          _innerPos = {x: (ww - 2) / 2 - arrWidth, y: -arrWidth + 1};
          break;
        default:
          _pos = {x: 0, y: 0};
      }
      return {
        pos: _pos,
        innerPos: _innerPos,
        outerPos: _outerPos
      };
    },
    show: function () {
      this.wrap.show();
    },
    close: function () {
      this.wrap.remove();
    }
  };
})(jQuery);

CSS:

.tip-wrap {
  position: absolute;
  display: none;
}

.tip-arr-a, .tip-arr-b {
  position: absolute;
  width: 0;
  height: 0;
  line-height: 0;
  border-style: dashed;
  border-color: transparent;
}
page:

<div class="test">
  <span data-tip-msg="我是测试数据<br>我是测试数据<br>我是测试数据">我是测试数据</span>
</div>

<script>
  $('.test span').tips();
</script>

Wirkung:

Das Obige ist ein einfaches jQuery-Eingabeaufforderungsfeld-Plugin (Tipp). Ich hoffe, Sie können es auf Ihre eigenen Projekte anwenden und etwas gewinnen.