Try out the following example and click on "No Text" link.
<head><!-- Plotly.js --><scriptsrc="https://cdn.plot.ly/plotly-latest.min.js"></script></head><body><divid="myDiv"><!-- Plotly chart will be drawn inside this DIV --></div><script>varxValue=['Product A','Product B','Product C'];varyValue=[20,14,23];vartrace1={x: xValue,y: yValue,type: 'bar',text: yValue,textposition: 'auto',hoverinfo: 'none',marker: {color: 'rgb(158,202,225)',opacity: 0.6,line: {color: 'rbg(8,48,107)',width: 1.5}}};vardata=[trace1];varlayout={title: 'January 2013 Sales Report'};Plotly.newPlot('myDiv',data,layout);functionno_text(){Plotly.restyle('myDiv',{textposition: ['none']},[0]);}</script><ahref="javascript:no_text()">No Text</a></body>
Try out the following example and click on "No Text" link.