Function insertHTML

sprint.js:190–269

(position, args)

  }

  var insertHTML = function(position, args) {
    var argsLen = args.length
    var contents = args

    // reverse argument list for afterbegin and afterend
    if (argsLen > 1 && position.indexOf("after") > -1) {
      contents = []
      var i = argsLen
      while (i--) {
        contents.push(args[i])
      }
    }

    for (var i = 0; i < argsLen; i++) {
      var content = contents[i]
      if (typeof content == "string" || typeof content == "number") {
        this.each(function() {
          this.insertAdjacentHTML(position, content)
        })
      }
      else if (typeof content == "function") {
        this.each(function(index) {
          var callbackValue = content.call(this, index, this.innerHTML)
          insertHTML.call(Sprint(this), position, [callbackValue])
        })
      }
      else {
        var isSprintObj = content instanceof Init
        var clonedElements = []
        var elementsToInsert = (function() {
          if (isSprintObj) {
            return content.get()
          }
          if (Array.isArray(content)) {
            return sanitize(content, true, true)
          }
          // DOM node
          if (content.nodeType) {
            return [content]
          }
          // getElementsByTagName, getElementsByClassName, querySelectorAll
          return toArray(content)
        }())
        var elementsToInsertLen = elementsToInsert.length

        this.each(function(index) {
          /*
           * The fragment serves multiple purposes:
           * 1) It significantly boosts perf when multiple elements are added.
           * 2) It avoids the need for elementsToInsert.reverse() for afterbegin and afterend
           * 3) It removes an element from its original position before adding it back, which is
           * especially useful for elements not part of the DOM tree. That means it's important even
           * when elementsToInsertLen == 1.
           */
          var fragment = document.createDocumentFragment()
          for (var i = 0; i < elementsToInsertLen; i++) {
            var element = elementsToInsert[i]
            var elementToInsert