JavasScript — Uncaught Error: Syntax error, unrecognised expression: [href=#contact] (WordPress)












0














I am trying to implement an interaction where a class is added to a specific menu item when a is in view. Unfortunately, I am getting the following error:



Uncaught Error: Syntax error, unrecognised expression: [href=#contact]


Thank you in advance.



Pseudo-code




  • Scroll the page

  • When the section is in view add a class to the respective nav item


JavaScript



// Cache selectors
var lastId,
topMenu = $('#top-menu'),
topMenuHeight = topMenu.outerHeight() + 1,
// All list items
menuItems = topMenu.find('a'),
// Anchors corresponding to menu items
scrollItems = menuItems.map(function() {
var item = $($(this).attr('href'))
if (item.length) {
return item
}
})

// Bind click handler to menu items
// so we can get a fancy scroll animation
menuItems.click(function(e) {
var href = $(this).attr('href'),
offsetTop = href === '#' ? 0 : $(href).offset().top - topMenuHeight + 1
$('html, body').stop().animate(
{
scrollTop: offsetTop,
},
850,
)
e.preventDefault()
})

// Bind to scroll
$(window).scroll(function() {
// Get container scroll position
var fromTop = $(this).scrollTop() + topMenuHeight

// Get id of current scroll item
var cur = scrollItems.map(function() {
if ($(this).offset().top < fromTop) return this
})
// Get the id of the current element
cur = cur[cur.length - 1]
var id = cur && cur.length ? cur[0].id : ''

console.log('Cur', cur, 'ID', id)

if (lastId !== id) {
lastId = id
// Set/remove active class
menuItems.parent().removeClass('active').end().filter('[href=#' + id + ']').parent().addClass('active')
}
})









share|improve this question



























    0














    I am trying to implement an interaction where a class is added to a specific menu item when a is in view. Unfortunately, I am getting the following error:



    Uncaught Error: Syntax error, unrecognised expression: [href=#contact]


    Thank you in advance.



    Pseudo-code




    • Scroll the page

    • When the section is in view add a class to the respective nav item


    JavaScript



    // Cache selectors
    var lastId,
    topMenu = $('#top-menu'),
    topMenuHeight = topMenu.outerHeight() + 1,
    // All list items
    menuItems = topMenu.find('a'),
    // Anchors corresponding to menu items
    scrollItems = menuItems.map(function() {
    var item = $($(this).attr('href'))
    if (item.length) {
    return item
    }
    })

    // Bind click handler to menu items
    // so we can get a fancy scroll animation
    menuItems.click(function(e) {
    var href = $(this).attr('href'),
    offsetTop = href === '#' ? 0 : $(href).offset().top - topMenuHeight + 1
    $('html, body').stop().animate(
    {
    scrollTop: offsetTop,
    },
    850,
    )
    e.preventDefault()
    })

    // Bind to scroll
    $(window).scroll(function() {
    // Get container scroll position
    var fromTop = $(this).scrollTop() + topMenuHeight

    // Get id of current scroll item
    var cur = scrollItems.map(function() {
    if ($(this).offset().top < fromTop) return this
    })
    // Get the id of the current element
    cur = cur[cur.length - 1]
    var id = cur && cur.length ? cur[0].id : ''

    console.log('Cur', cur, 'ID', id)

    if (lastId !== id) {
    lastId = id
    // Set/remove active class
    menuItems.parent().removeClass('active').end().filter('[href=#' + id + ']').parent().addClass('active')
    }
    })









    share|improve this question

























      0












      0








      0







      I am trying to implement an interaction where a class is added to a specific menu item when a is in view. Unfortunately, I am getting the following error:



      Uncaught Error: Syntax error, unrecognised expression: [href=#contact]


      Thank you in advance.



      Pseudo-code




      • Scroll the page

      • When the section is in view add a class to the respective nav item


      JavaScript



      // Cache selectors
      var lastId,
      topMenu = $('#top-menu'),
      topMenuHeight = topMenu.outerHeight() + 1,
      // All list items
      menuItems = topMenu.find('a'),
      // Anchors corresponding to menu items
      scrollItems = menuItems.map(function() {
      var item = $($(this).attr('href'))
      if (item.length) {
      return item
      }
      })

      // Bind click handler to menu items
      // so we can get a fancy scroll animation
      menuItems.click(function(e) {
      var href = $(this).attr('href'),
      offsetTop = href === '#' ? 0 : $(href).offset().top - topMenuHeight + 1
      $('html, body').stop().animate(
      {
      scrollTop: offsetTop,
      },
      850,
      )
      e.preventDefault()
      })

      // Bind to scroll
      $(window).scroll(function() {
      // Get container scroll position
      var fromTop = $(this).scrollTop() + topMenuHeight

      // Get id of current scroll item
      var cur = scrollItems.map(function() {
      if ($(this).offset().top < fromTop) return this
      })
      // Get the id of the current element
      cur = cur[cur.length - 1]
      var id = cur && cur.length ? cur[0].id : ''

      console.log('Cur', cur, 'ID', id)

      if (lastId !== id) {
      lastId = id
      // Set/remove active class
      menuItems.parent().removeClass('active').end().filter('[href=#' + id + ']').parent().addClass('active')
      }
      })









      share|improve this question













      I am trying to implement an interaction where a class is added to a specific menu item when a is in view. Unfortunately, I am getting the following error:



      Uncaught Error: Syntax error, unrecognised expression: [href=#contact]


      Thank you in advance.



      Pseudo-code




      • Scroll the page

      • When the section is in view add a class to the respective nav item


      JavaScript



      // Cache selectors
      var lastId,
      topMenu = $('#top-menu'),
      topMenuHeight = topMenu.outerHeight() + 1,
      // All list items
      menuItems = topMenu.find('a'),
      // Anchors corresponding to menu items
      scrollItems = menuItems.map(function() {
      var item = $($(this).attr('href'))
      if (item.length) {
      return item
      }
      })

      // Bind click handler to menu items
      // so we can get a fancy scroll animation
      menuItems.click(function(e) {
      var href = $(this).attr('href'),
      offsetTop = href === '#' ? 0 : $(href).offset().top - topMenuHeight + 1
      $('html, body').stop().animate(
      {
      scrollTop: offsetTop,
      },
      850,
      )
      e.preventDefault()
      })

      // Bind to scroll
      $(window).scroll(function() {
      // Get container scroll position
      var fromTop = $(this).scrollTop() + topMenuHeight

      // Get id of current scroll item
      var cur = scrollItems.map(function() {
      if ($(this).offset().top < fromTop) return this
      })
      // Get the id of the current element
      cur = cur[cur.length - 1]
      var id = cur && cur.length ? cur[0].id : ''

      console.log('Cur', cur, 'ID', id)

      if (lastId !== id) {
      lastId = id
      // Set/remove active class
      menuItems.parent().removeClass('active').end().filter('[href=#' + id + ']').parent().addClass('active')
      }
      })






      javascript jquery scroll menu interaction






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      share|improve this question










      asked Nov 22 '18 at 21:55









      Diego Oriani

      192212




      192212
























          1 Answer
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          2














          jQuery is pretty picky when it comes to quotes in attribute selectors. You must us a quoted string for the value (either single or double).



          Change:



          filter('[href=#' + id + ']')


          To:



          filter('[href="#' + id + '"]')


          If you wanted to be slightly less precise but have the benefit of dropping the # you could use ~= instead of just = too.






          share|improve this answer





















          • Randy Casbum thank you for your help. Your solution has solved the problem.
            – Diego Oriani
            Nov 23 '18 at 12:06











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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          jQuery is pretty picky when it comes to quotes in attribute selectors. You must us a quoted string for the value (either single or double).



          Change:



          filter('[href=#' + id + ']')


          To:



          filter('[href="#' + id + '"]')


          If you wanted to be slightly less precise but have the benefit of dropping the # you could use ~= instead of just = too.






          share|improve this answer





















          • Randy Casbum thank you for your help. Your solution has solved the problem.
            – Diego Oriani
            Nov 23 '18 at 12:06
















          2














          jQuery is pretty picky when it comes to quotes in attribute selectors. You must us a quoted string for the value (either single or double).



          Change:



          filter('[href=#' + id + ']')


          To:



          filter('[href="#' + id + '"]')


          If you wanted to be slightly less precise but have the benefit of dropping the # you could use ~= instead of just = too.






          share|improve this answer





















          • Randy Casbum thank you for your help. Your solution has solved the problem.
            – Diego Oriani
            Nov 23 '18 at 12:06














          2












          2








          2






          jQuery is pretty picky when it comes to quotes in attribute selectors. You must us a quoted string for the value (either single or double).



          Change:



          filter('[href=#' + id + ']')


          To:



          filter('[href="#' + id + '"]')


          If you wanted to be slightly less precise but have the benefit of dropping the # you could use ~= instead of just = too.






          share|improve this answer












          jQuery is pretty picky when it comes to quotes in attribute selectors. You must us a quoted string for the value (either single or double).



          Change:



          filter('[href=#' + id + ']')


          To:



          filter('[href="#' + id + '"]')


          If you wanted to be slightly less precise but have the benefit of dropping the # you could use ~= instead of just = too.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 22 '18 at 22:10









          Randy Casburn

          4,2741318




          4,2741318












          • Randy Casbum thank you for your help. Your solution has solved the problem.
            – Diego Oriani
            Nov 23 '18 at 12:06


















          • Randy Casbum thank you for your help. Your solution has solved the problem.
            – Diego Oriani
            Nov 23 '18 at 12:06
















          Randy Casbum thank you for your help. Your solution has solved the problem.
          – Diego Oriani
          Nov 23 '18 at 12:06




          Randy Casbum thank you for your help. Your solution has solved the problem.
          – Diego Oriani
          Nov 23 '18 at 12:06


















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