javascript - Google charts not cooperating with me -

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i have few issues google chart:

  1. i want y-axis 0 20 , grid-line should occur every 2 points: i'll have 0,2,4,6,8,10,12, etc , i'm trying achieve line of code

    'vaxis':{ title: 'score',  titletextstyle: {color: '#27318b'},   maxvalue:20,  minvalue:0,  gridlines: {count:10, color:'#27318b'} }

    but starts @ 0 , ends @ 22,5 , shows grid line @ every 2,5. don't understand why is?

  2. i want width of graph 100%, when change (wether in html or javascript) width of 100% height gets small nothing readable anymore, if specified height. in jquery

var options = {'width':800, 'height':600}

in html

<div id="chart_div" style="width:800; height:300">

  1. try increasing gridlines count 1, since there 11 values between 0 , 20 step size of 2.

  2. regarding question width , height, better see code trying use can see trying do. want width of graph 100%, 100% of what? container or page? want called chart area (not including vertical axis , legend) 100% of container? options can experiment include width , height of container element (that provide), top-level 'width' , 'height' options, , 'chartarea' options 'width' , 'height'.


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