JavaScript 限制文本框不可输入英文单双引号的方法

<input id="workname" style="width: 200px" name="workname" value="" type="text" onkeyup="javascript:replacelikeval(this)" />

function replacelikeval(comp){ 
    if (comp.value.indexof("'") != -1 || comp.value.indexof("\"") != -1) { 
      //comp.value = comp.value.substring(0, comp.value.length-1); 
      comp.value = comp.value.replace(/\'/g,"").replace(/\"/g,""); 
    } 
  }